US3157896A

US3157896A - Apparatus for applying cement to a shoe sole and applying steam to a shoe upper

Info

Publication number: US3157896A
Application number: US181682A
Authority: US
Inventors: Jacob S Kamborian; Robert B Dunlap
Original assignee: Individual
Current assignee: Individual
Priority date: 1962-03-22
Filing date: 1962-03-22
Publication date: 1964-11-24
Anticipated expiration: 1981-11-24

Description

1964 J. 5. KAMBORIAN ETAL 3,157,895

APPARATUS FOR APPLYING CEMENT TO A SHOE sou: AND APPLYING STEAM TO A SHOE UPPER Filed March 22, 1962 7 Sheets-Sheet 1 FIG-/ INVENTORS I Jacob S. Kambor/an BY Robe/'7 B. Dun/0,0-

My ATTV NOV. 3W4 J. s. KAMBOFHAN mm. 3@157,89

APPARATUS FOR APPLYING CEMENT TO A SHOE SOLE-AND APPLYING STEAM TO .iz SHOE UPPER Filed March 22, 1962 7 Sheets-Sheet 2 Nov. 24, 1964 J. 5. KAMBORIAN ETAL 3,157,896

APPARATUS FOR APPLYING CEMENT TO A SHOE SOLE AND APPLYING STEAM TO A SHOE UPPER Filed March 22, 1962 7 Sheet's -Sheet 3 7 Sheets-Sheet 4 s. KAMBORIAN ETAL FIG. .9

FIG. 4

APPARATUS FOR APPLYING CEMENT TO A SHOE SOLE AND APPLYING STEAM TO A SHOE UPPER Filed March 22, 1962 Nov. 24, 1964 1964 J. 5. KAMBORIAN ETAL 3,157,896

APPARATUS FOR A? YING CEMENT TO A SHOE SOLEAND APPLYI STEAM TO A SHOE UPPER Filed March 22, 1962 7 Sheets-Sheet 5 24, 1964 J. 5. KAMBORIAN ETAL 3,157,896

APPARATUS FOR APPLYING CEMENT TO A SHOE sous AND APPLYING STEAM TO A SHOE! UPPER Filed March 22, 1962 7 Sheets-Sheet 6 FIG."

Nov. 24, I964 s. KAMBORIAN ETAL 3, 7, APPARATUS FOR APPLYING CEMENT TO A SHOE SOLE AND APPLYING STEAM TO A SHOE UPPER Filed March 22, 1962 7 Sheets-Sheet 7 FIG.- 15 240 United States Patent M niborian, ll short l3.

nor to o Mar. 22, I

223 Elaims. El. til-4.1)

This invention relates to an apparatus for preparing a shoe for cement lasting by performing the same general functions as the apparatus disclosed in Patent No. 3,079,618.

In the toe lasting of shoes by a cement lasting process, it is desirable that cement be deposited on the toe portion of the shoe insole and that the toe portion of the shoe upper be steamed to soften the upper and render it pliable just before the shoe is lasted by wiping the lasting margin of the upper onto the insole and adhesively bonding the upper to the insole in a toe lasting machine such as that disclosed in pending application Serial No. 100,- 979, filed April 5, 1961.

The instant invention solves this problem by providing a steam chamber having a last support on its root for supporting bottom-up the vamp or" a last having an insole located on its bottom. The last has an upper draped loosely about its toe, and the toe portion of the upper is received in the steam chamber. Means are provided for continuously supplying steam to the steam chamber. A hold-down extends above the root of the steam chamher, and a column is situated below the steam chamber. A motor connected to the steam chamber is operative to move the steam chamber against the hold-down to thereby clamp the last and insole between the roof of the steam cha their and the hold-down. A carrier is mounted for swinging movement about the column and the carrier has a cement pot mounted thereon, for movement towards and away from the axis of the column. A follower extends inwardly of the cement pot, and spring means are interposed between the carrier and cement pot to yieldably urge the cement pot inwardly of the column, the amount of inward movement being limited by an abutment on the pot engageable with a stop on the carrier. The stop is movable outwardly to thereby move the cement pot outwardly against the force of the spring means. A nozzle is provided on the cement pot extending inwardly thereof above the follower.

A control is provided which enables the clamping means to normally be open and the cement pot to be in its outer position. A shoe upper and insole, mounted on a last as described above, may then be placed in the apparatus so that the toe portion of the upper is in the steam chamber and the vamp of the upper and last are supported on the roof of the steam chamber. The control is then actuated to concomitantly raise the steam chamber to clamp the last and insole between the steam chamber roof and hold-down and to move the stop inwardly to allow the spring means to cause the follower to yieldably bear against the side of the last under the influence of the spring means. After this, the control is actuated to cause the cement pot to swing about the periphery of the toe of the last and to concomitantly extrude cement through the nozzle onto the toe of the insole. After the cement pot has moved about the toe through a predetermined arc, the control causes its movement to stop and the extrusion of the cement to cease. The control is now actuated to lower the steam chamber and move the cement pot outwardly so that the shoe may be removed from the apparatus.

Referring to the accompanying drawings:

FIGURE 1 is a front elevation of the apparatus;

3,157,895 Patented Nov. 24, 1964 FIGURE 2 is a plan view of the apparatus;

FIGURE 3 is an elevation view of the steam chamber and the carrier for the cement pot;

FIGURE 4 is a vertical section taken on the line 4-4 of FIGURE 3;

FKGURE 5 is a section of the steam chamber taken 011 line 55 of EEGURE 3;

FIGURE 6 is a section of the cement pot;

FIGURE 7 is a view oi the follower and nozzle that are mounted on the cement pot;

FlGURE 8 is an elevation of the carrier and cement pot looking inwardly thereof;

FIGURE 9 is a section taken on line 99 of FIG URE 8;

FIGURE 10 is a plan view of the drive for moving the carrier;

FIGURE 11 is a side elevation of the drive shown in FIGURE 10;

FIGURE 12 is a vertical section of a means for supplying steam to the steam chamber;

FIGURE 13 is a schematic representation of the control circuit of the apparatus;

FIGURE 14 is a representation of the shoe with the upper located in the steam chamber and the last and insole clamped between the roof of the steam chamber and the hold-down; and

FIGURE 15 is a representation of the follower and nozzle as they travel about the last.

The apparatus comprises a frame It? that includes uprights 12, a table 14 connected to the tops of the uprights and a cross piece 16 extending between the uprights below the table.

A column it? is secured to the table 14 by fasteners 20 extending through a flange 21 on the column. The column extends downwardly through a hole in the table (FIGURES 3 and 4) and has an air operated motor 22 threaded to its lower end. The piston rod 24 of the motor 22 extends upwardly through an axial hole in the column. The flange 21 supports a thrust bearing 26 thatenvelops the column, and the thrust bearing supports a hub 28 that is rotatable about the column. An arm 30, rotatable about the column, is supported on the hub 28, and a plate that takes the form of a gear 32 is positioned at the lower end of the hub. Fasteners 34 connect the hub 28, arm Fill and gear 321 for rotation in unison about the column 18' A steam chamber 36 is secured to the upper end of the piston rod 24-, see FZGURES 35 and 14. The steam chamber is made of a heat conductive material such as aluminum, has a hollow interior 37, and has an opening 33 at its front through which a shoe upper may be inserted as described below. The roof of the steam chamber has a downwardly extending arch it and a pad 42 is bonded to the top surface of the arch. The pad is made of resilient material such as rubber or leather. The floor 43 of the steam chamber has an arcuate channel 44- therein that extends close to the periphery of the liner midway between the top and bottom of the floor. A plurality of ports 46 extend from the channel 44 to the upper surface of the floor 43. One end 48 of the channel 4 is closed and the other end is connected by a coupling till to a tube 52. A pair of electric cartridge heaters 54 are located in holes in the door 43 and a thermostat 56 for controlling the heaters 54 is secured to the front of the door 43. A hold-down 58 is bolted to the table 14 and extends upwardly therefrom and has a foot 59 positioned above the steam chamber 36. A guide bar 66 connected to and extending forwardly of the steam chamber as, is slidably mounted in a vertically extending slot 62 of a guide plate 64 secured to the hold-down 58, see FIG. 1.

A steam pot as is secured to the cross piece 16 by fasteners 68 (FIGURES 1 and 12). The steam pot has a well 7% therein and is covered by a cover 72. The aforementioned tube 52 has communication with the interior of the steam pot by wayof a coupling 74. A pair of electric cartridge heaters 76 are located in holes in the base 78 of the steam pot. A funnel 89 is positioned above the steam pot by being connected to a bar 32 extending away from the table 14. A tube 84 extends from the funnel St to a coupling 86 on the steam pot es, the coupling 86 extending into the well 79. A valve 88 is connected to the fitting 86 Within the well 70 and a float 9th is pivotally connected to the valve 25$. The valve 88 is a conventional float control valve which is normally open to permit water to flow therethrough into the well '70 and automatically closes when the water in the well raises thefloat 98* ,to a predetermined height.

A reversible electric motor 92 is located below the table 14 bybeing bolted to a flange 94 secured to and depending from the table 14 (FIGURE 11). The motor shaft 96 extends upwardly of the motor 92 and is connected by a coupling 98 to a shaft 1% that extends through the table 14. Above the table 14-, the shaft 11M has a pair of collars 1&2 and Th4 secured thereto, and a bar 1% is swingably mounted on the shaft between the collars. A pinion 108 is secured to the shaft 1% above the bar 166. The pinion 108 is in mesh with a pinion 1110 that is rotatably mounted in the bar res. A tension spring 112 extends from an end of the bar 1% to the table 14. A brake pad 114, made of hard rubber or the like, is secured to the other end of the bar 1%. The spring 112 normally swings the bar 11% about the fulcrum formed by the shaft 1% in a direction to disengage the pinion 11d} and the aforementioned gear 32 and to force the pad 114 against the gear. A solenoid 1116 mounted on the table 114 has its armature connected to the same end of the bar 1% as has the pad 114, so that energization of the solenoid serves to swing the bar 1% about its fulcrum against the force of the spring 112 to move the pad 114 away from the gear 32 and cause the meshing of the pinion 11b and the gear 32. A pair of

switch actuator cams

118 and 126 are secured to the underside of the gear 32 adjacent its periphery and approximately 210 apart. A single pole double throw switch 122, mounted on the table 14, has its blade in position to be moved by the cams 1 .13 and 11%. The switch 122 is so constructed that it is closed when one of the cams is in position to move the switch actuator and is otherwise open. A guard plate 124 is supported above the table 14 by spacers 126 to be located above the gear 32 and to encompass the column 18 (see FIGURES 1 and 4).

The aforementioned arm 3t? has an offset 128 extending upwardly and radially outwardly to which a cement pot carrier 13% is secured by fasteners 132, see FIGURES 3, 8 and 9. An air actuated spring return motor 134, mounted in the carrier 130, has a piston rod 136 extending outwardly of the carrier. A plurality of rollers 13.38, rotatably mounted in the carrier 1130, act as gibs in supporting a cement pot base Mil for inward and outward movement on the carrier 13%. The base 140 has a lug 14-2 depending therefrom into a groove 144 running the length of the carrier 130. A rod 146 extends outwardly from the lug 142, through the groove 144 and through a hole in a plate 148 afiixed to the outer end of the carrier 139. An abutment d is adjustably secured to the outer end of the rod 14-6, and a compression spring 1152 is coiled about the bar 14-6 between the lug 1.42 and the plate 148. With this arrangement, the spring 152 urges the cement pot base 14b inwardly to a position Where the abutment 1S9 engages the piston rod 136. The admission of air to the motor 134 causes an outward movement of the abutment 150, the rod 14-6 and the cement pot base 149 against the force of the spring 152.

The cementpot base 140 has a cement pot 154 secured thereto by fasteners 156. The cement pot (see FIG- URES 2 and 6) is constructed similarly to the cement pots disclosed in pending applications Serial No. 112,417

led May 24-, 1961, and Serial No. 168,578 filed January 19, 1962, now Patent No. 3,130,876. The pot is made of heat conductive material such as aluminum and includes a well 158 in which a column of cement, preferably in the form of small granules, may be placed. A cement support 16% is threaded into a hole in the bottom of the well 158, The support 16% has a centrally located small diameter passage 1162 that opens into a larger diameter passage 164. A ball 166, resting on a pin 168, is cooperative with the passage 162 to act as a valve in the manner described below. The support has a plurality of nodes 17% extending upwardly therefrom. The passage 16% opens into a chamber 172 and an orifice 174, closed by a plug 176, intersects the chamber 172. An inclined bore 178 extends downwardly from a ledge below the top of the pot and intersects the orifice 174. A plate 132 is supported on spacer sleeves 184 abovethe ledge 1%, and an air actuated motor 186 is secured to the plate The motor 186 has a piston rod 188 extending downwardly therefrom coaxially with the bore 178. The piston rod 1% is secured to a shank 19h which in turn is secured to a plunger 192 that is slidable in the bore 178. The pot 154 has a downwardly and inwardly extending nozzle 19 i, and a conduit 196 extends from the chamber 172 through the nozzle 194 to provide communication between the chamber and the lower end of the nozzle. The conduit 1% has a smaller cross-sectioned area than the

passages

162 and 164. A pair of electric cartridge heaters 198 are located in vertical holes in the pot 154. The heaters are controlled by a thermostat 2% located in a hole in the pot 1% below the orifice 174.

In the operation of the cement pot, the plunger 192 is normally in its upper position and the ball 166 is normally resting on the pin 163 with a space between the ball and the walls of the passage 164 and between the ball and the bottom of the passage 162, as shown in FIG. 6. The heaters 198 are turned on and thermoplastic cement in granular form is poured into the well 153. The thermostat 2th) is set to control the heaters 198 to melt the cement and maintain it molten. The nodes 117d heat the granules of solid cement located in the well 153 and thereby cause a relatively rapid melting of the cement in the well. The molten cement gravitates from the well through the

passages

162 and 164 into the chamber 172 and from the chamber 172 into the orifice 174 and the portion of the bore 17% below the plunger 192 to eventually fill these members. Because of the relatively high viscosity of the molten cement and the relatively small cross-sectional area of the conduit 11%, the cement does not flow through the conduit in the absence of a super-atmospheric pressure.

When it is desired to extrude molten cement through the nozzle i9 5 onto work, the control mechanism described below is utilized to actuate the motor 1% to move the plunger downwardly. The downward movement of the plunger 192 creates a pressure to force the ball 166 up against the passage 16?. to block the passage 162 and, at the same time, force molten cement from the chamber 172, through the conduit 1.96 and onto the work. The closing of the passage 162 prevents backllow of cement upwardly therethrough.

When the below described control is actuated to move the plunger 192 upwardly prior to its reaching the lower end of the bore 173, it creates a auction in the conduit 1% to cause a reverse flow of the cement in tl e conduit and terminate the extrusion of cement from the nozzle. Since, as aforesaid, the cement used has a relatively high viscosity and tends not to how downwardly through the conduit in the absence of a super-atmospheric pressure, there is substantially no drip of cement from the nozzle until the plunger 192 is again moved downwardly. The suction forces created by the upward movement of the plunger 192 also cause the ball 166 to move downwardly againstthe pin lo to thereby open the passages r and T64 and cause cement to be drawn from the well 158 into the chamber 17.2.. The area of the passage around the ball 166 is suificiently larger than the conduit to permit flow of cement through the passages lldfi and despite the relatively high viscosity of the cement while at the same time drawing a negligible amount of cement upwardly through the conduit 1%.

, A bracket 2192 is rigidly secured to the cement pot 154 above the nozzle 1% (see H63. 6 and '7) to; extend downwardly and inwardly of the pot. A caring sleeve 2% is secured to the lower, inner end of the bracket N2 and a spindle 2% is mounted in the sleeve 2% for swinging movement about a vertical axis 2&8. The innermost end of the conduit 31% terminates below the spindle 23d substantially at the axis 2% for the reasons set forth below. A plate 21d, rigidly connected to the spindle to swing in unison therewith, extends downwardly and outwardly of the spindle and terminates in out 5512. A stud 2%- is threaded into and i adjustably secured to the nut 212 to extend forwardly thereor on a horizontal axis. A collar 216, fixed to the inner end of the nut 212, has a roller 22% rotatably mounted thereon for rotation about a vertical axis. The plate 2M9 has a slot therein through which the nozzle 1% projects. The innermost portion of the periphcry of the roller 2t? is thus mounted for swinging movement about a horizontal are lying outwardly of the axis 2% with a center of curvature on said axis.

In preparing the apparatus for operation, a jug 22-9 of water (MG. 1) is upended into the funnel The water flows from the funnel 8%, through the tube 8d, the coupling 86 and the valve and into the steam pot well "Ill until the water rises in the well '76 to a level sufficient to cause the float filito shut the valve Cement in granular form is poured into the cement pot well A switch 222 (FIG. 13) is closed to allow electric current to pass therethrough from a source of power labelled L1, L2 through a line 224 to the heaters 1% controlled by the thermostat Bill), the heaters 5 5 controlled by the thermostat 56, and the heaters 76. The heaters serve to melt the cement in the cement pot 15- 5 and cause the distribution of the molten cement in the cement ot in the manner described above. heaters '76 act to boil the water in the well 7@ and convert it into steam. The steam arising from the well 76 passes through the tube 52. into the channel 44 of the steam chamber as and from thence through the ports 4% into the steam chamber 1'. terior 37. The heaters S4- serve to superheat the steam in the chamber 36 and prevent its premature condensation. Since the well Til is covered by the cover 2, the steam in the well "id can escape from the wall only by passing through the relatively small opening formed in the coupling 7'4. A super-atmospheric pressure is therefore generated by the steam in the well which could create a baclzflow of water out of the well through the coupling as. By locating the tunnel fill at a higher elevation than the well 79 a head of water is created having a superatmospheric pressure sufiicient to offset tie pressure of the steam in the well, and ensure that the Water flows through the coupling into the well "I'll when the valve 88 is opened by the float 9d.

The closing of the switch caused current to flow therethrough, through a line see through terminal a of a single pole, double throw, switch 22% and through a line 230 to energize a solenoid 232. The energization of the solenoid 232 aotuates a four way valve to cause pressurized air to go from a source labelled 3 through a tube 236, the valve 234 and

tubes

237 and 238 into the motor 22 to cause the motor to lower the steam chamber At the same time, air passes from the tube 23?, through a tube 2 th into the motor 1341 to force the piston rod 136 outwardly against the force of the spring 24-2 in the motor to thereby move the cement pot T534 outwardly.

At this time, the arm and the cement pot 154? carried thereby is at one of its extremities of circumferential movement so that the switch 122 is closed by one of the cams ill? or if the cement pot 15 is in the position shown in i to. 2, then the switch 122 is held closed by cam 12%. The closing of the switch 222 therefore caused current to flow therethrougb, through a line 244, the switch l? and a line to energize a solenoid 2 th. The energ' ion of the solenoid 2d?) actuates a four way valve to cause pressurized air to how from the source S through a tube 252, the valve and a tube into the motor to cause the motor to raise the plunger 3%.

At this time, the solenoid lid is deenergized so that the pad lid is forced against the gear 32 by the spring M2.

The worl: (PEG. 14) comprises a last having an insole secured to its bottom and an upper 26th draped loosely over its toe end, winch upper may have previously been heel seat lasted by an apparatus similar to that disclosed in copending application Serial No. l07,l56 filed May 2, 1961. The upper may have a lining 262 secured to its toe portion and a box toe may be interposed between the upper and lining. After the cement in the cement pot has me ted and steam is arising into the steam chamber, the work is grasped at the heel and is presented into the apparatus with the toe portion of the upper, the b x toe and the lining inserted into the chamber interior 3? and the vamp or" the last resting on the pad 42 as shown in MG. 14. The outward positioning of the cement pot by the motor permits the work to be so positioned without interference from the cement pot.

The switch is so constructed that each time it is actuated the switch blade moves from the terminal with which it is in contact to the other terminal. The switch is now actuated to move from terminal a to terminal 1'). This causes current to flow through a line 2.63 to energize a. solenoid 27d and causes the solenoid to be deenergized. The energization of the solenoid 27d and the de energization of the solenoid actuates the Valve to cause air to flow through a tube 2W2 into the motor 22 to actuate the motor to raise the steam chamber 35 and clamp the last and insole between the hold down foot 59 and the pad d2, as shown in FIG. 14. The movement of the switch to its [1 position also vents the motor 1% and permits the spring 2 52 in the motor 134 to move the piston rod 136 inwardly thereby enabling the spring 152. to resiliently urge the cement pot inwardly until the roller Z18 bears against the side of the last in the number I position indicated in PEG. 15. Should the operator decide that the last and insole are not properly positioned between the hold down foot 559 and the pad d2 for the below de scribed cement applying operatiorr'he may actuate the switch to return it to its a position and thereby lower the steam chamber and move the cement pot outwardly, after which he may again actuate the switch 223 to move it to its 1') position to again raise the steam chamber and move the cement pot inwardly. During the vertical movement of the steam chamber 36, the confinement of the guide bar dd in the slot 62 precludes the movement of the steam chamber about the axis of the piston rod 23 When the operator is satisfied that the last and insole are properly clamped between the hold down foot 59 and the pad 42., he depresses and quickly releases a push button switch 274 which is so constructed as to be closed only so long asitis depressed. The momentary closure of the switch 2'74 causes current to flow from the line 244 through the switch 27 and a line 2'76 to energize a latch coil 2")8 that forms part of a latch relay 2%. The relay ass is a commercial item that includes a switch 232 that is closed whenever the latch coil 272i is pulsed and is opened whenever a release coil 284 is pulsed. The Inomcntary energization of the coil therefore causes the switch 232 to be closed and current to how from the line a line 2%, the switch 282 and a line 2-83 to energize a coil 2% forming a part of a stepping relay 292.

The stepping relay 292 is a commercial item that ins,157,sse

cludes a pair of switches and each of has a terminal a and a terminal b. Both switches are always either in the a position or the 12 position, and the relay is so con- Structed that each time the coil is pul ed the of the switches 2% and 2% move in unison from the terminal they are in contact with to the other terminal. The switches 294 and 2% are so wired to the motor 92, that when switch terminals 11 are closed current flowing through the switches causes the motor to rotate in one direction, and when the switch terminals b are closed current iioviing through the switches causes the motor to rotate in other direction. The energization of the coil 2% moves the switches 294 and 2% from the a to the ['1 position.

The closing of the switch 232 also causes current to flow through the line a line 2% and a line and through the switches 2%4 and 2% to cause the motor 92 to rotate counterclockwise (FIG. 10). At the same time, current flows through the line 2% and a line 3% to the solenoid 116 to energize the solenoid and thereby disengage the pad llld from the gear 32 and cause the pinion 11b to mesh with the gear to effect the counterclockwise movement of the gear 32 and the cement pot 25 (FIGS. 2 and 10) about the axis of t e column Immediately after the commencement of movement of the gear 32, the cam lit) departs from the switch 1232. thereby opening the switch.

The opening of the switch 122 deenergizes the solenoid 248, and substantially at the same time, the closing of the switch 232 causes current to flow through the lines 2 56, 2% and Gill to energize a solenoid The energization or" the solenoid 3534- actuates the valve 25s to cause pressurized air to how therethrough and into a tube 3% and thence into the motor his to cause the motor to lower the plunger H2 and extrude molten cement out of the nozzle 1%.

When the gear 32 and the cement pot have swung for about 2ll, the cam ll? engages and closes the switch 122 which causes current to flow therethrough and through a line 3% to pulse the release coil and thereby open the switch The opening of the switch 232 deenergizes the coil 2%, cuts oil the current to the motor 92 and deenrgizes the solenoid lid to cause the spring 112 to disengage the pinion lid" from the gear and to apply the brake pad M4 against the gear The substantially concurrent closing of the switch and opening the switch 282 causes a substantially concurrent energization of the solenoid and deenergization or" the solenoid 3%) 1 to thereby actuate the motor 186 to raise the plunger 192 and terminate the extrusion of cement through the nozzle 1%.

The switch 223 is now actuated to move it to its a position thereby actuating the motor 22 to lowe' the steam chamber 36 to release the shoe and last and actuating "he motor 13 to move the cement pot 15 i outwardly and move the roller 213 out of engagement with the last.

The work piece may now be removed from the apparatus and a second work piece placed therein. The above described operations are repeat-ed on the second work piece. However, this time when the switch 232 is close the pulsing of the cell causes the switches 29 i and 2% to move from their Z2 to their a position so that the motor 9'2. rotates clockwise (FIG. and the gear 32 and cement pot i (FIGS. 2 and 10) swing clockwise (FEGS. 2 and 10) about the axis of the column until the cam 12.49 closes the switch 122 To summarize, after the work piece has been placed in position, the operator actuates the switch 228 to raise the steam chamber 35 and clamp the last 2'56 and insole 253 between the pad 42 and hold down foot 59 and move the cement pot inwardly so that the roller 215 engages the last. He then momentarily depresses the switch 274 to concomitantly swing the cement pot 15 3 from a first extremity of its path of movement to the second extremity and cause molten cement to be extruded from the nozzle 194;. When the cement pot reaches the second extremity c. is)

of its path of movement, its movement is terminated and the extrusion of cement ceases. The operator then actuates the switch 228 to lower the steam chamber and move the cement pot outwardly to release the work piece. The operator repeats this sequence of steps with a second work piece and achieves the same sequence of operations with the exception that the cement pot swings from the second extremity of its path of movement to the first extremity.

FIG. 15 is a schematic representation of the position of the nozzle 1% and roller 21% during the swinging of the cement pot 15 As aforesaid, the roller is mounted to swing about the vertical axis Ztltt that extends through the tip of the nozzle (FIG. 6). Therefore the force generated by the spring 152 urging the roller against the side ol? the last causes the roller to swing about the axis 208 until a line extending from the axis 2&8 to the center of the roller is perpendicular to the tangent common to the roller and the peripheral portion of the last engaged by the roller. This situation occurs continuously during the movement of the nozzle and roller about the last from position I through position V of FIG. 15. As a result, the ribbon of cement 31C: deposited on the insole by the nozzle 1% is at a substantially uniform distance from the edge of the last and insole despite the fact that the nozzle is at all times directed towards the axis 312 of the hub 18 about which the cement pot swings.

During the period that the last is supported on the pad with the toe of the upper 269, the lining 262 and the box too 264 inserted in the steam chamber interior 37, including the period when the last 256 and insole 253 are clamped between the pad 42 and the hold down foot 59 and the ribbon of cement Sill is being deposited on the insole, steam emanating from the ports 46 swirls about the parts in the chamber interior. The action of the steam and the heat radiating from the heaters 54 serve to soften and condition the upper and box toe for the subsequently performed lasting operation. The work, when it is removed from the apparatus, is therefore in condition to be toe lasted by toe lasting apparatus such as that disclosed in copending application Serial No. b90979 filed April 5, 1961, which wipes the lasting margin of the upper upon the insole and adhesively bonds the lasting margin to the insole.

it should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications which fall within the scope of the appended claims. Terms such as above and inward have been included to define the relative positions between the parts and should be construed accordingly.

We claim:

1. An apparatus for concomitantly applying cement to the toe portion of a shoe insole and applying steam to the toe portion of a shoe upper, wherein the insole is located on the bottom of a last and the toe portion of the upper is draped loosely about the toe of the last, comprising: a steam chamber adapted to receive the toe portion of the upper; means for supplying steam to the chamber; a support on the top of the chamber adapted to support the vamp of the last; a hold-down above the support; means for imparting relative heightwise movement between the steam chamber and the hold-down to clamp the last and insole therebetween; and means for applying cement to the insole while it is thus clamped.

2. An apparatus for concomitantly applying cement to the toe portion of ashes insole and applying steam to the toe portion of a shoe upper, wherein the insole is located on bottom of a last and the toe portion of the upper is draped loosely about the toe of the last, comprising: a steam chamber having a hollow interior adapted to receive the toe portion of the upper; means for supplying steam to said chamber interior; a pad on the roof of the chamber; a hold-down located above the pad; means for raising the chamber to clamp the vamp of the last and the insole between the pad and hold-down; cement apply ing means mounted for movement about the periphery of the toe portion of the last, said cement applying means including a nozzle through which cement is adapted to flow onto the insole during said movement of the cement applying means; and means for effecting said movement of the cement applying means, and concomitantly extruding cement from the nozzle.

3. An apparatus for concomitantly applying cement to the toe portion of a shoe insole and applying steam to the toe portion of a shoe upper, wherein the insole is located on the bottom of a last and the toe portion or the upper is draped loosely about the toe of the last, comprising: a column; a rod extending through the column; a steam chamber secured to the top of the rod above the column; a hollow interior formed in the chamber adapted to receive the toe portion of the upper; means for supplying steam to said chamber interior; a pad on the roof of the chamber; a hold-down located above the pad; drive means connected to the rod to raise the rod and the steam chamher to clamp the vamp of the last and the insole between the pad and the hold-down; an arm swingably mounted on the column; cement applying means mounted on the arm for rotation therewith, said cement applying means including a nozzle through which cement is adapted to flow onto the insole; means for swinging the arm about the column to cause the cement applying means to move about the periphery of the toe portion of the insole; means for maintaining the nozzle above the insole adjacent its periphery during the movement of the cement applying means; and means for extruding cement through the nozzle during the movement of the cement applying means.

4. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on its bottom; a cement applying unit mounted for movement about the periphery of the last; a nozzle on said unit located above the sole; resilient means yieldably urging the unit inwardly; and means for driving the unit about the periphery of the last with the resilient means yieldably urging the unit against the side of the last and for concomitantly extruding cement through the nozzle onto the sole.

5. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on botto l; a carrier mounted for swinging movement about an axis substantially perpendicular to the plane of the sole; a cement applying unit supported on the carrier; a follower member on said unit; resilient means for yieldably urging the unit inwardly of the carrier to cause the follower member to bear against the side of the last; a nozzle on said unit located above the sole; and means for driving the carrier about said axis and concomitantly extruding cement through the nozzle onto the sole.

6. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on its bottom; a carrier mounted for swinging movement about an axis substantially perpendicular to the plane of the sole; a cement pot mounted on the carrier for movement toward and away from said axis; resilient means interposed between the carrier and the cement pot for yieldably urging the pot inwardly toward said axis; a follower on the cement pot adapted to bear against the side of the last; a nozzle on the cement pot located above the sole; and means for driving the carrier about said axis and concomitantly extruding cement through the nozzle onto the sole.

7. An apparatus for depositing cement on a sole located on the bottom of a last comprising: a carrier mounted for swinging movement about axis that is substantially perpendicular to the plane of the sole; a cement pot mounted on the carrier for movement toward and away from said axis; resilient means interposed between the carrier and the cement pot for yieldably urging the pot inwardly toward said axis; a follower mounted on and extending inwardly oi" the pot adapted to bear against the side of the last; a nozzle mounted on and extending inwardly of the pot above the follower; a plunger movably mounted in the pot, and operative when moved in a first direction to extrude cement through the nozzle; and means for driving the carrier about said axis and for concomitantly moving the plunger in said first direction.

8. An apparatus for depositing cement on a sole located on the bottom of a last comprising: a carrier mounted for swinging movement about an axis substantially perpendicular to the plane of the sole; a cement pot mounted on the carrier for movement toward and away from said axis; resilient means interposed between the carrier and the cement pot for yielclably urging the cement pot inwardly toward said axis; a follower mounted on and extending inwardly of the pot adapted to bear against the side of the last; a nozzle mounted on and extending inwardly of the pot above the follower; means for swinging the carrier about said axis and concomi-- tantly extruding cement through said nozzle; and means for terminating the swinging movement of the carrier after it has swung through a predetermined arc and for concomitantly terminating the extrusion of cement.

9. An apparatus for depositing cement on a sole located on the bottom of a last comprising: a column; an arm mounted on said column for swinging movement about the axis of the column; a carrier secured to the arm; a cement pot mounted on the carrier for movement toward and away from said axis; resilient means interposed between the carrier and the cement pot for yieldably urging the cement pot inwardly toward said axis; a follower mounted on and extending inwardly of the pot adapted to bear against the side of the last; a nozzle mounted on and extending inwardly of the pot above the follower; a well in said pot for storing cement; a plunger, slidably mounted in said pot, operative when moved in a first direction to extrude cement from the well through the nozzle and operative when moved in a second direction to terminate said extrusion; a motor connected to the plunger to effect said plunger movements; drive means for swinging the carrier about said axis and concomitantly actuating said motor to move the plunger in said first direction; and means for causing said drive means to terminate the swinging movement of the carrier after it has swung through a predetermined arc and for concomitantly actuating the motor to move in said second direction.

10. A drive mechanism for swinging an arm through a predetermined are comprising: a column, an arm rotatably mounted on the column; a gear secured to said arm for rotation therewith; a shaft; a motor connected to said shaft for rotating the shaft; a bar swingably mounted on the shaft; a first pinion connected to said shaft; a second pinion, in mesh with the first pinion, rotatabiy mounted on the bar, said second pinion being so mounted as to be brought into and out of mesh with the gear upon swinging of the bar; spring means connected to the bar to yieldahly maintain the second pinion out of mesh with the gear; force means connected to the bar operative to overcome the spring means and to swing the bar in a direction to bring the second pinion into mesh with the gear; control means operative to actuate the motor to rotate the shaft and to concomitantly actuate the force means to bring the second pinion into esh with the gear and thereby swing the arm about the column; means responsive to the swinging of the arm through a predetermined arc to terminate the actuation of the motor and to concomitantly deactuate the force means thereby enabling the spring means to bring the second pinion out or mesh with the gear; and a brake pad on said bar mounted to bear against the gear when the spring means is effective to hold the second pinion out ofmesh with the gear and to move away oneness l it from the gear when the second pinion is brought into mesh with the gear.

11. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on its bottom; a cement applying unit mounted for movement in an are about an end portion of the last from a first position to a second position; a nozzle on said unit located above the sole; a control means; means operative in response to successive actuations of the control -eans to cause the unit to move about the last alternately from the first to the second position and from the second. posh tion back to the first position; and means operative in response to each actuation of the control means to extrude cement through the nozzle during each movement of the unit.

12. An apparatus for depositing cement on a sole located on the bottom of a last comprising: a carrier mounted for swinging movement about an axis that is substantially perpendicular to the plane of the sole; a cement pot mounted on the carrier for movement toward and away from said axis; resilient means interpose between the carrier and the cement pot for yieldably urging the pot inwardly toward said axis; a follower mounted on and extending inwardly of the pot adapted to bear against the side of the last; a nozzle mounted on and extending inwardly of the pot above the follower; a well in said pot for storing cement; a plunger, slidably mounted in said pot, operative when moved in a forward direction to extrude cement from the well through the nozzle and operative when moved in a rearward direction to terminate said extrusion; a first motor connected to the plunger to effect said plunger movements; a second reversible motor; clutch means for drivingly connecting said second motor to the carrier and normally maintaining the second motor and the carrier out of driving relation; control means interconnecting the first motor, the second motor and the clutch means; means responsive to a first actuation of the control m ans to cause movement of the second motor in a first direction to cause the clutch means to drivingly connect the second motor to the carrier to thereby swing the carrier from a first position about said axis, and to actuate the first motor to move the plunger in said forward direction to thereby extrude cement through the nozzle; means responsive to the swinging of the carrier through a predetermined arc to a second position to cause the control means to shut off the second motor, to cause the clutch means to disconnect the second motor and the carrier, and to actuate the first motor to move the plunger in said rearward direction; and means responsive to a second actuation of the control means to cause movement of the second motor in the opposite direction, to cause the clutch means to drivingly connect the second motor to the carrier to thereby swing the carrier about said axis from the second posh tion back to the first position, and to actuate the first motor to move the plunger in said forward direction to thereby extrude cement through the nozzle.

13. A drive mechanism for alternately swinging an arm through a predetermined angle comprising: an arm mounted to swing about a predetermined axis; a plate con nected to said arm and mounted to swing about said axis; a reversible motor; means drivingly connecting the plat and the motor; a pair of switch actuators spaced on said plate an arc distance that produces said angle; switch means positioned to be intersected by said switch actua-.

tors; control means interconnecting the motor and the switch means; means responsive to a first actuation of the control means to move the motor in a first direction and thereby move the plate and the arm in a first direction, the initiation of the plate movement causing a first one of said switch actuators to move out of intersection with said switch means; means responsive to the intersection of the second one of said switch actuators with the switch means to shut off the motor; and means responsive to a second actuation of the control means to move the motor lid in the opposite direction and thereby move the Plate and the arm back in the opposite direction, the initiation of the plate movement causing the second one of said switch actuators to move out of intersection with the switch means; and means responsive to the intersection of said first one of said switch actuators with the switch means to shut oif the motor.

14. A drive mechanism for alternately swinging an arm in opposite directions through a predetermined angle comprising: an arm mounted to swing about a predetermined axis; a gear connected to said arm and mounted to swing about said axis; a shaft; a reversible motor connected to said shaft to efiect rotationthereof; a bar swingably mounted onthe shaft; a second pinion, in mesh with the first pinion, rotatably mounted on the bar, said second pinion being so mounted as to be brought into and out of mesh with the gear upon swinging of the bar; spring means connected to the bar to yieldably maintain the second pinion out of mesh with the gear; force means connected to the bar adapted to overcome the spring means and swing the bar in a direction to bring the second pinion into mesh with the gear; a pair of cams spaced apart on said gear an arc distance that produces said angle; switch means positioned to be intersected by said cams; control means interconnecting the motor, the force means and the switch means; means responsive to a first actuation of the control means to actuate the force means to bring the second pinion into mesh with the gear and to move the motor in a first direction and thereby move the arm in a first direction, the initiation of the gear movement causing a first one of said cams to move out of intersection with the switch means; means responsive to the intersection of the second one of said cams with the switch means to shut off the motor and to deactuate the force means to move the second pinion out of mesh with the gear; and means responsive to a second actuation of the control means to actuate the force means to bring the second pinion into mesh with the gear and to move the motor in the opposite direction and thereby move the arm back in the opposite direction, the initiation of the gear movement causing said second one of said cams to move out of intersection with the switch means; and means responsive to the intersection of said first one of said cams with the switch means to shut olf the motor and to deactuate the force means to move the second pinion out of mesh with the gear.

15. The drive mechanism according to claim 14 further comprising: a brake pad on said bar mounted to bear against the gear when the spring means is eifective to hold the second pinion out of mesh with the gear and to move away from the gear when the second pinion is brought into mesh with the gear.

16. A cement applicator comprising: a nozzle; 21 conduit in the nozzle, through which cement is adapted to be extruded, terminating at an outlet portion of the nozzle; a follower; and means mounting the follower for swinging movement about an axis that intersects the conduit proximate to said outlet portion of the nozzle.

17. A cement applicating apparatus comprising: a cement pot; a nozzle extending inwardly of the cement pot; a conduit in the nozzle, through which cement is adapted to be extruded, terminating at an outlet portion of the nozzle; a follower positioned below the nozzle outwardly thereof; means mounting the follower for swinging movement about an axis that intersects the conduit proximate to said outlet portion of the nozzle; and means for extruding cement from the cement pot through the nozzle.

18. The apparatus according to claim 17 wherein said follower is a roller and said follower mounting means comprises: a bracket secured to the cement pot; a plate pivotally connected to said bracket for swinging movement about said axis and extending downwardly and outwardly of the axis; a slot in the plate through which the nozzle projects; a stud connected to the end of the plate 135 remote from said axis; an means on the stud for rotatably mounting the roller.

19. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on its bottom; a cement applying unit mounted for movement about the periphery of the last; a nozzle on said unit mounted above the sole; a conduit in the nozzle, through which cement is adapted to be extruded, terminating at an outlet portion of the nozzle; a follower mounted on said unit and located outwardly of and below said nozzle portiommeans mounting the follower for swinging movement about an axis that intersects the conduit proximate to said outlet portion of the nozzle; resilient means for yieldably urging the unit inwardly; and means for driving the unit about the periphery of the last with the resilient means yielda'oly urging the follower against the side of the last and for concomitantly extruding cement through the conduit onto the sole.

20. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on its bottom; a carrier mounted for swinging movement about a first axis substantially perpendicular to the plane of the sole; a cement applying unit supported on the carrier; a nozzle on said unit mounted above the sole; a conduit in the nozzle, through which cement is adapted to be extruded, terminating at an outlet portion of the nozzle; a follower mounted on said unit and located outwardly of and below said nozzle portion; means mounting the follower for swinging movement about a second axis that is parallel to said first axis and that intersects the conduit proximate to said outlet portion of the nozzle; resilient means for yieldably urging the unit inwardly of the carrier to cause the follower to bear against the side of the last; and means for driving the carrier about said first axis and concomitantly extruding cement through the nozzle onto the sole.

21. A cement applying apparatus comprising: support means for holding bottom-up a last having a sole located on its bottom; a cement applying unit mounted for movement about the periphery of the last; a nozzle on said unit located above the sole; resilient means for yieldably urging the unit inwardly; selectively actuable force means to move the unit outwardly against the pressure applied by the resilient means to permit the last to be placed on the support means, and to release the unit to permit it to move inwardly under the pressure of the resilient means; and means for driving the unit about the periphery of the last with the resilient means yieldably urging the unit against the side of the last and for concomitantly extruding cement through the nozzle onto the sole.

22. The cement applying apparatus according to claim 21 wherein the support means includes clamping means for clamping the last in place and further comprising: control means operative to render the clamping means effective concomitantly with the release of the unit and to render the clamping means ineffective concomitantly with the outward movement of the unit by the force means.

23. A cement applying apparatus comprising: support means for holding bottom-up a last having a sole located on its bottom; a carrier mounted for swinging movement about an axis substantially perpendicular to the plane of the sole; a cement applying unit supported on the carrier; a follower member mounted on said unit; resilient means interposed between the carrier and unit for yieldably urging the unit inwardly of the carrier to cause the follower member to bear against the side of the last; stop means mounted on the carrier; abutment means movable with the unit and adapted to bear against the stop means to limit the extent of inward movement of the unit under the pressure of the resilient means; selectively actuable force means for moving the stop means outwardly against the pressure of the resilient means to thereby move the unit outwardly to permit the last to be placed on the support means, and to cause inward movement of the stop means to permit the unit to move inwardly under the pressure of the resilient means; a nozzle on said unit located above the sole; and means for driving the carrier about said axis and concomitantly extruding cement through the nozzle onto the sole.

24. The apparatus according to claim 23 wherein the support means includes a pad and a hold-down mounted for relative movement toward and away from each other; and further comprising: control means operative to impart movement of the pad and hold-down toward each other concomitantly with the inward movement of the stop means and to impart movement of the pad and holddown away from each other concomitantly with the outward movement of the stop means.

25. A cement applying apparatus comprising: means for holding bottom-up a last having a sole located on its bottom; a carrier mounted for swinging movement about an axis that is substantially perpendicular to the plane of the solo; a cement pot mounted on the carrier for movement toward and away from said axis; a rod connected to the cement pot and extending outwardly thereof; spring means yieldably urging the cement pot and the rod inwardly toward said axis; an abutment on the outer end of said rod; a stop rod mounted on the carrier and positioned to be engaged by the abutment to thereby limit the degree of inward movement of the carrier caused by the spring means; selectively actuable force means for moving the stop rod outwardly to thereby move the cement pot outwardly against the pressure of the spring means and to move the stop rod inwardly to thereby cause the spring means to move the cement pot inwardly; a follower on the cement pot adapted to bear against the side of the last; a nozzle on the cement pot located above the sole; and means for driving the carrier about said axis and concomitantly extruding cement through the nozzle onto the sole when the stop rod has been moved inwardly.

26. An apparatus for clamping a last having a sole lo cated on its bottom and for applying cement to the sole comprising: a column; an aim mounted on said column for swinging movement about the axis of the column; a carrier secured to the arm; a cement pot mounted on the carrier for movement toward and away from said axis; a rod connected to the cement pot and extending outwardly thereof; spring means yieldably urging the cement pot and the rod inwardlytoward said axis; an abutment on the outer end of said rod; a stop rod mounted on the carrier and positioned to be engaged by the abutment to thereby limit the degree of inward movement of the carrier caused by the spring means; a first motor mounted on the carrier actuable to move the stop rod outwardly to thereby move the cement pot outwardly against the pressure of the spring means and to move the stop rod inwardly to thereby cause the spring means to move the cement pot inwardly; a last support rod movably mounted in and extending axially of the column; a last support secured to the top of the last support rod above the column; a hold-down located above the last support; a second motor mounted on the column actuable to move the last support rod upwardly to clamp the last'and sole etween the last support and hold-down and to move the last support rod downwardly to release the last and sole; a follower on the cement pot adapted to bear against the side of the last; a nozzle on the cement pot located above the sole; and means, operative when the stop rod has been moved inwardly and the last support rod has been moved upwardly, for driving the carrier about said axis and concomitantly extruding cement through the nozzle bottom; a cement applying unit mounted to swing about an axis that is substantially perpendicular to the plane of the sole; a nozzle on said unit located above the sole; a reversible motor; means drivingly connecting the motor to the unit; control means for the motor; means responsive to a first actuation of the control means to operatethe motor in a first direction :and cause movement ofthe unit about said axis from a predetermined first position; means responsive to the arrival of 'the unit at a predetermined second position to shut off the motor andterrninate the movement of the unit; means responsive to a second actuationof the control means to operate the motor ina second direction and cause movement of the unit about said axis from the predetermined second position back to the predetermined first position; means responsive to the arrival of the unit at said predetermined first position to shut off the motor and terminate the movement of the unit; and means for extruding ,cement'through the nozzle during each of the said movements-of'the-unit.

References Cited in the file of'this patent UNITED STATES PATENTS Furber Nov. 5, 1912 Jennings Oct. 30, 1928 Geiger et a1. Ian. 22, 1929 Baynard Apr. 23, 1929 Vachon Feb. 20, 1940 Clark Dec. 17, 1946 Malser Feb. 8, 1949 Elliott Feb. 7, 1950 Burkhart Aug. 5, 1952 Essrnann Apr. 2, 1957 Reger Sept. 9, 1958 Clark Nov. 24, 1959 Kamborian Jan. 31, 1961 Kamborian et a1 Nov. 7, 1961 Lynn Jan. 7, 1964