US1277764A

US1277764A - Heel-breasting machine.

Info

Publication number: US1277764A
Application number: US14348317A
Authority: US
Inventors: Ralph C Simmons
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1917-01-20
Filing date: 1917-01-20
Publication date: 1918-09-03
Anticipated expiration: 1935-09-03

Description

a 1,3Z 11% Z I 116 Q v E 5 R. c. SIMMONS.

HEEL BREASTiNG MACHINE.

APPLICATION FILED JAN. 20. 1911 Patented Sept. 3, 1918. I

150 za z WVE/VTUR GEL 4 4 n STATES PATENT OFFICE.

RALPH C. SIMMONS, OF BEVERLY, MASSACHUSETTS, ASSIGNOR, BY MESN'E ASSIGN- MENTS, T0 UNITED SHOE MACHINE-RY CORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

HEEL-BREASTING MACHINE.

Specification of LettersPatent.

Patented Sept. 3, 1918.

' To all whom it may concern:

- in the manufacture of boots and shoes and particularly to heel breasting machines.

In power heel breasting machines of one type in commercial use, the shoe is supported on a jack which is adjustable, but the height of which is fixed during operation of the machine, and the knife is reciprocated in a direction from the tread face of the heel toward'the shank. To arrest action of the knife when the shank is reached, a stop or hunter is carried with the knife toward the shoe shank and, upon contact with the shank, acts through suitable mechanism to disconnect the knife from its operating means and arrest its cutting action, it being impossible in such a machine to give the knife a constant stroke because of the varying heights of lasts and the differences in thickness of the soles at the shanks.

In another form. of breasting machine the knife is given a constant stroke and the shoe is so placedprior to the action of the knife as to locate the surface of its shank in a fixed position relatively to the limit of the knife stroke. An object of this invention is to provide in a machine of the latter type an improved shoe positioning mechanism which will be simple in construction, convenient, expeditious and substantially automatic in operation.

A feature of the invention consists in the combination with a knife having a constant limit of operative movement, of a normally elevated shoe support, means for depressing the shoe to bring the surface of the shank always to the limit of the operative move ment' of the knife, and means for then holding the support against depression during the operation of the knife.

The positioning means, preferably and as herein shown, comprises a shank stop or gage which is normally raised out of the path of the shoe as it is moved into the machine and which is operated against the shoe shank to depress the shoe to a predetermined position by a preliminary movement before the knife descends. As shown herein, a tread plate is brought into operative position upon the heel in OOHJUI'lCtiOIl with the movement of the stop after the machine starts and the support is locked against depression and is held by strong pressure against the heel to hold the shoe against displacement during the breasting operation. i i i The shoe support is preferably movable to carry the shoe into and out of operative position in the machine in the direction of the length of the shoe, and the locking mechanism for the support is rendered operative immediately after the machine starts and is unlocked ust before the machine stops.

In the drawings,

Figure 1 is a side elevation of a machine embodying this invention;

Fig. 2 is a front view of the machine partly in vertical section; and

Fig. 8 is a detail view of part of the stop depressing mechanism.

Referring to the drawing, 2 indicates the frame or column of the machine. The work support comprises amember 4 which is arranged to slide through a projection 6 from the frame 2 and is supported by a spring 8 bearing beneath a flange on theupper end of the member 4. To the upper end of the member 4 is pivoted at 10 a post 12 upon the upper end of which is arranged a last support 14 upon which is rested the crown of the last of the shoe which is being breasted. The arrangement of the pivot 10 is such that the post 12 may be swung outwardly of the machine to the right in Fig. l to facilitate the placing of the shoe upon the last support 14.

Above the tread face of the heel when the shoe is in position in the machine is arranged a tread plate 16 which is held to a member 18 by a bolt 20' and nut 22, the plate 16 being slotted to permit adjustment of the plate longitudinally of the shoe. The member 18 is pivoted at 24 to a slide 26 and is adjustable angularly about the pivot 24 by means of a screw 28. The plate 26 carries at its upper end a pin 30 which lies in a slot 32 formed in a member 34 which is mounted upon the end of a lever 36'pivoted at 38 to a bracket 40 on the machine frame. The lever 36 carries at the end opposite the pivot 38 a threaded member 42 which is pivoted to the lever at 44. A screw 46 passes through the threaded member 42 and is mounted for rotation in the member 34. The screw is operated by a hand crank 48 and provides vertical adjustment of the member 34 relatively to the end of the lever 36. A spring 50 connected between the member 34 and the slide 26 maintains the pin 30 normally at the upper end of the slot 32.

A rod 52pivoted to the lever 36 passes upwardly through an overhanging projection 54 from a' bracket 64 and carries check nuts compressed when the machine is at rest by upward pressure of a roll 59 mounted on a normally raised slide 96 to be further described. A lever 60 is pivoted at 62 to the bracket 64 upon the machine frame and a spring 66 is located between: the lever and a projection 68 on the slide 26. The end of the lever 60 opposite the pivot 62 is connected by a link 70 to a slide 72 which is mounted for vertical movement through a bearing 74 on the machine frame. The slide 72 carries at its lower end a shank stop 76 having projections 78 for engaging the'sh ank portion of the shoe upon the lateral margins thereof. A screw 80 is threaded through a projection on the slide 72 and is adapted to bear upon the top face of the bearing 74 when the stop 76 is in its lowermost position. A knife 86 is clamped at its lateral edges in a holder 88 by means of a screw 90. The upper end of the knife is supported against vertical upward movement by an adjustable abutment screw 92 threaded through a' portion 94 of the slide 96 which is also the knife carrier and upon which the holder 88 is also mounted. The knife carrier 96 is given a reciprocation having a constant lower limit by means of a connecting rod 100 which is pivoted at one end to the knife carrier and at the other to a crank pin 102 on a disk 104 which is fixed to a drive shaft 106.

The lower end of the jack member 4 is composed of a series of plates 110 which extend downwardly between two projections 112 extending outwardly from the frame of the machine. The plates 110 are slotted at 114 to permit relative vertical movement between-the plates and a rod 116 which passes through the slots 114. Between each pair of plates 110 and outside of the outer plate are arranged plates 120 formed as illustrated in Fig. 1 to slide on the projections 112 longitudinally of the rod 116. The outer end of the rod 116 is provided with a nut 121 and a washer 122 which bears upon the outer plate 120. The inner plate 110 is arranged to move vertically over a surface formed on the portion of the frame from which the parts 112 project outwardly. The inner end of the rod 116 carries a block 130 on which is mounted a roll arranged to be engaged by a cam projection 132 on the disk 104. Between the block 130 and the machine frame, as clearly shown in Fig. 2, is a spring 134. It will now be clear that when, upon movement of the disk 104, the cam projection 132 passes the roll on the block 130 the compressed spring 134 will re-act to move the rod 116 longitudinally inwardly of the machine and will clamp the plates 110 between the plates 120 and the machine frame and will thereby lock the jack member 4 against vertical movement.

The lever 60 is connected by a pull rod 150 to a treadle 152. The pull rod 150 passes through a member 154 rotatably mounted on the treadle 152 and is provided with aspring 160 mounted on the rod between the member 154 and the washer on the end of the rod. When the treadle is depressed the shoe positioning devices are operated through the pull rod 150 in a manner to be more fully described hereinafter, and the treadle is then further depressed by reason of the yielding of the spring 160 to trip the clutch and start the machine. This is eifected through a latch 170 pivoted at its upper end to the treadle and having a shoulder at its lower end which bears on one arm 172 of a bell-crank lever pivoted at 174. A vertical arm 173 of the bell-crank which constitutes the stop arm of the clutch is held inwardly by a spring 176 to engage a projection 178 and operates when the arm 172 is depressed by the latch 17 O to allow the clutch connection between a drive wheel 179 and the shaft 106 to take effect. To restore the stop arm to stopping position before the completion of a revolution pin 180 is provided on the cam disk 104 which engages the upturned end of a pull rod 182 pivoted to the latch 170 and swings the shoulder on the latch out of engagement with the arm 172 permitting the stop arm 173 to return to clutch releasing position. The latch 170 and rod 182 are returned to normal position by a pivotally arranged spring 184.

Fig. 1 shows the treadle partly depressed to bring the tread plate 16 yieldingly against the top lift of the heel and to force the shank stop 76 against the shank whereby the shoe and support are depressed against tension of the spring 8 as far as permitted by the stop screw 80. T/Vhen the machine is in position for the introduction of the work, the work support is swung forwardly about the pivot 10 and the treadle being then released, the tread plate 16 is raised away from the heel and the stop 76 is raised above the plane of the top lift by the spring 50, the spring 66 being uncompressed. A shoe and last are placed upon the last support 1d and swung into the machine, the stop 7 6 being then raised high enough to clear the heel without compression of the spring 8. When the heel is under the tread plate 16 the treadle is slightly depressed to move the lever 60 downwardly. By the spring 66, acting against the spring 50, the tread plate is brought lightly against the tread face of the heel. The heel is positioned with reference to the front edge of the tread plate which acts as a gage to indicate the amount of material which will be removed from the heel breast by the knife when operated. Further pressure on the treadle brings the stop 76 against the shank and forces the shoe and shoe support down until the stop screw 80 engages the frame 74. The stop screw is so adjusted that the surface of the shank will be at the limit of the knife stroke. The spring 160 against which the treadle bears and through which the described movements are efiected is stiff enough to overcome the springs 66 and 8 and after the stop screw 80 contacts with the frame is compressed to press the latch 17 6 against the arm 172 and start the machine. As soon as the machinestarts the spring 134 is released and locks the support against depression by reason of the thrust of the knife against the heel and the spring 58 is released to force the tread plate 16 more firmly against the heel of the shoe and prevent movement of the heel in a horizontal plane. The knife descends and breasts the heel, its stroke by previous adjustment of the screw 80 being caused to terminate in such relation to the plane of the shank engaging face of the stop 76 that a chip will be removed from the breast without the knife cutting into the shank. As the knife carrier returns, the spring 58 is again compressed and lastly the jack locking mechanism is released, allowing the jack to return to raised position. The treadle being released the stop 76 and tread plate 16 will be raised and the shoe will be free to be removed by outward movement of the jack.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is l. A heel breasting machine comprising a reciprocating knife, a vertically movable shoe support, a stop movable toward the shoe support, means for moving the stop against the shoe to depress the shoe support, means for limiting the movement of the stop to position the shank of the shoe out of reach of the knife, and means for holding the support against further depression while the knife acts.

2. A heel breasting machine comprising a reciprocating knife having a constant stroke, a depressible shoe support, a stop arranged to engage the shank of the shoe and movable to depress the shoe and the support, means for limiting the movement of the stop, and means for locking the jack against depression during the operation of. the

knife.

3. In a heel breasting machine, the co1nbi-.

nation of a reciprocating knife having a constant stroke, a support for -y1eld1ngly supporting the shoe, a stop to engage the shank of the shoe, means for operating the stop to depress the shoe to a predetermined position, means for thereafter eifectingthe operation of the knife, and means for preventing depression of the shoe during the.

operation of the knife.

4. In a heel breasting machine the combi simultaneously applying additional pressure to the tread plate.

5. In. a machine of the class described, the combination of a knife having a constant stroke, a tread plate arranged for movement toward and from the heel of a shoe, a shank stop movable toward and from the shoe, manual means for operating the tread plate against the heel and for pressing the'stop against the shank of the shoe, means for limiting the movement ofthe stop at a point where its shank engaging face is at the limit of the stroke of the knife, and means for suspaining the shoe during the operation of the mife.

6. In a machine of the class described, the

combination of a knife, a manually depressible stop, a jack supported yieldingly and adapted to be depressed by the stop to a predetermined position, means for operating the knife to said position, and means for locking the jack from further depression during the operation of the knife.

7. In a machine of the class described, a knife having a constant limit of operative movement, a normally elevated shoe support, means for depressing the support to bring the surface of the shank of a shoe on the support always to the limit of the operative movement of the knife, and means for then holding the support against depression during the operation of the knife.

8. In a machine of the class described, the combination of a reciprocating breasting knife, means for operating the knife, a normally depressible support to sustain the shoe, a stop for engaging the shoe at the shank, means for depressing the stop, shoe and shoe support to a predetermined position which is the same for all shoes, and means for holding the support against further depression when the knife is operat ing to breast the heel.

9. A machine of the class described having, in combination, a knife having a fixed limit of movement, means for operating the knife toward and from a shoe to breast the heel, 'a depressible shoe support, means for depressing the shoe always to the same degree to position the tread face of the shank at the limit of the knife movement, and means for holding the shoe from movement by the action of the knife during the operati on of the knife.

10. In a machine of the class described, the combination of a knife having a fixed limit of movement, means for operating the knife toward and from the shoe to breast the heel, a depressible shoe support, means acting resiliently upon the shoe at the tread face of the heel, other means operating at the shank to depress the shoe and the support to locate the shoe shank in predetermined position which is independent of the characteristics of the individual. shoe, and means for holding the shoe in said position during the operation of the knife.

In testimony whereof I have signed my name to thisspecification.

RALPH C. SIMMONS.

Copies ofthis patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.