US2114453A

US2114453A - Five-roll cementing machine

Info

Publication number: US2114453A
Application number: US748808A
Authority: US
Inventors: Walter P Osgood
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-10-18
Filing date: 1934-10-18
Publication date: 1938-04-19
Anticipated expiration: 1955-04-19

Description

April 19 1938- w. P. osGooU FIVE-ROLL CEMENTING MACHINE Filed ocr. 18, 1954 5 Sheets-Sheet l April 19, 1938. w, P, QSGOOD, 2,114,453

FIVE-ROLL CEMENT ING MACHINE Filed Oct. 18, 1954 5 Sheets-Sheet 2- mul April 19 1938 w. P. osGooD FIVE-ROLL CEMENTING MACHINE Filed oct, 18. 1934 5 sheets-sheet s T72 veizor G1 my@ zg WYLM lo avnowzqq April 19,-1938.

W. P. QSGQOD FIVE-ROLL' CEMENTING MACHINE Filed oct, 18, 1934 5 Sheets-Sheet 4 April 19, 1938 w. P. osGooD ROLL C'EMENTING MACHINE Filed Oor. 18, 1934 vFIVE:-

5 Sheets-Sheet 5 UNITED STATES FIVE-nou. Oumma MACHINE l wam r. ouwe, Malden, man. Application october 18, 1984, serial No. 748,808

29 Claims.

The present invention relates to cementing machines which are used in many industries and have a wide use in the manufacture of shoes in applying coating material to one face of various forms of shoe parts.

The machine which the present invention im proves is able to coat with latex both the piani--V form and non-planiform portions on the nosh-- face of a shanked-out sole during its single passagethrough the machine. A characteristic ieature of this machine is the second coating roll provided with a yielding-peripheral surface constructed of rubber. This roll has to be removed frequently because there is an ailinity between the latex and the rubber surfaced roll which causes the latex to build up irregularly thereon.

One of the principal objects of the present indevices, constructions and arrangements of partsV hereinafter described and then set forth broadly and in detail in the appended claims which possess advantages readily apparent to those skilled in the art.

The various features of the present invention will beunderswod readily from an inspection of the accompanying drawings illustrating the best form of the invention at present devised, in which,

Figure 1 is a view in plan of the sole cementing machine;

Fig. 2 is a view in plan, the pivoted arm carrying the upper rolls having been swung out of operating position to expose the lower rolls;

Fig. 3 is a'view in plan similar to Fig. 2, the lower rolls having been removed from the coating trough, the pivoted arm having been cut away to expose the largest one of the upper rolls, and the pivoted splash guard being tipped up to show the underlying doctor;

Fig. 4 is a view in left side elevation;

Fig. 5 is a view in sectional elevation of the lower roll which engages the trailingedge of the sole last;

Fig. 6 is a view in sectional elevation on the line.6-6, Fig. 1;

Fig. 'I is a detail view in sectional eievatien on the line 1 1, Fig. 1;

PATENT OFFICE the machine and the positioning of the upper roll Anearer to one of the lower rolls than to the other.`

In the illustrated embodiment of the invention the coating material, preferably latex, is contained in atrough III (Figs. 2, 3 and 6) integral with a frame (Figs. 4 and 6) secured to a base I2. The trough I0 is open at the top (Figs. 2 and 3), and is formed between the side walls |3 and I4 (Fig. 3), front wall I5 (Fig. 6), and back wall I6 of the frame. The coating material is supplied to the trough I0 by a flexible conduit |'I (Fig. 6), one end of which is connected to a T I8 secured by a nipple I 9 to the bottom of the trough III. 'I'he other end of the conduit |'I is connected to an outlet 2|) (Figs. 1, 2 and 3) formed -in the bottom of a receptacle 2|. The bottom of the receptacle 2| is provided with interior lugs 22 which support an inverted bottle (not shown) containing'coating material so that the trough l0 is supplied with the material in a siphonic or barometric manner.

The receptacle 2| 'is provided with an integral depending rib 23 (Figs. 4 and 6) which is pivoted intermediate its ends to one end of an arm 24 theother end ofwhich is secured to one end of a rock-shaft 25 journaled in the side walls I3 and I4. The other end of the rock-shaft 25 carries an arm 2 6 (Fig. 4) providedat one end with an operating handle 21. When the machine is in use the receptacle 2| is elevated into the position of Figs. 4 and 6 by rocking the handle 21 downwardly to allow the coating material to flow from the receptacle into the trough |0. In order to maintain the receptacle 2| elevated, the arm 26 is provided with an arcuate slot 28 (Fig. 4) which embraces loosely the shank of a threaded bolt 29 projecting outwardly from the side wall I4. `A hand wheel 30 threaded on the bolt 29 serves to clamp the arm 26 in any position of adjustment, there being a washer 3| interposed between the hand wheel 30 and the arm 26. When use of the machine is interrupted, the hand wheel 36 is loosened and the receptaclev 2| is lowered into a position below the level of the bottom of the trough I in order that the coating material therein may drain back into the receptacle.

As will be seen in Figs. 4 and 6, the lower end of the rib 23 is pivotally connected to one end of a link 32 the other end oi which (Fig. 6) is pivoted from the side wall I3 oi the frame. This construction, together with the arm 24, rockshai't 25, arm 28, and pivot points, provides a four-bar linkage lever which insures that the receptacle 2| will always be level whether in lowered or raised position. To facilitate draining both the trough I 0 and the receptacle 2|, the T I8 is connected to a conduit 33 (Figs. 4 and 6) provided with an elbow 34 to which one end of a short piece of pipe 35 is secured. The other end of the pipe 35 is provided with a cap 36. Upon removing the cap 36 the pipe 35 is swung downwardly, the elbow 34 turning on the conduit 33, in order to drain' the trough I 8 and the receptacle 2I.

Mounted to dip into the: trough I8 are two non-contacting, longitudinally fiuted, cylindrical work supporting and coating rolls 31 and 38 (Figs. 2, 6 and 9) arranged to project through the open top of. the trough I8. The roll 31, which is the first of these two rolls to engage the leading edge of the sole'as it passes through the machine, is a solid metal roll. As shown in Fig. 2 the roll 31 is provided on its opposite ends with cylindrical portions 39 and 40, respectively, of reduced diameter. The end portion 39 is journaled in a slot 4I (Fig. 3) formed in the side wall I3, and a gear 42 (Figs. 2 and '7) is secured to the free end of the portion 39. In this free end the portion 39 is provided with a conical center which engages and rotates on a conical point 43 (Figs. 1, 2 and 3) projecting laterally from the inside face of a bracket 44 supported from the side wall I3. The end portion 40 of the roll 31 is also provided with a conical center 45 (Fig. 8) which engages and rotates on a coni- .cal point 46 formed on one end of a rod 41. The

rod 41 is longitudinally movable in a split sleeve 48 secured to the side wall i4, and the sleeve 48 is provided with external threads which are engaged by internal threads on a hand-wheel 49. With this construction the hand-Wheel 49 may be loosened to allow the split sleeve 48 'to expand and thus release the rod 41 which may be then moved longitudinally in the sleeve 48 to withdraw the point 46 from the center 45. The roll 31 and its associated gear may then be removed bodily from the trough I0.

The gear 42 meshes with a gear 50 (Figs. 2, 3 and 7) formed on a sleeve 5I which is rotatably mounted on the cylindrical end portion, projecting through and beyond the side wall I3 (Fig. 3), of a bar 52 extending between the side walls I3 and I4 centrally of the trough I8. 'I'he opposite end of the bar 52 is also cylindrical and is mounted in the side wall I4. The structure of that portion of the bar 52 lying within the trough will be described'hereinafter. The sleeve I is secured to a double grooved pulley 53 rotatably mounted on the projecting end of the bar 52, and for driving the pulley 53, the frame I2 is provided with an electric motor 54 on the armature shaft 55 of which a double grooved pulley 56 is secured. The

pulleys

53 and 56 may be provided with two belts. It is preferred, however, to use a single belt 51, the lower runs of which are crossed as indicated in Figs. 1, 2 and 3.

The roll 38 is built up on a spindle 58 (Fig. 5) the opposite ends of which are provided, respectively, with centers 59 and 68 in order that the spindle 58 may be supported and removed readily in the same manner as described previously in connection with the roll 31. Intermediate its ends the spindle 58 is provided with an hexagonal portion 6I which forms a core for a sponge-rubber body portion 62. The body portion 62 is interposedvbetween two washers 63 and 64 mounted on a cylindrical portion of the spindle 58, and the washers are held in place b y collars 65 and 66, respectively, secured to the spindle 58. The body portion 62 isfcovered by a synthetic rubber cover 61 provided on its coating applying surface with longitudinal flutes. The principal characteristic of the synthetic rubber is that it is compounded to resist any tendency of the latex to stick thereto.

The spindle 58 is provided with a gear 68 (Figs. 2, 5 and '1) which meshes withthe gear 50. With this construction the two work supporting and coating rolls 31 and 38 are driven in the same counter-clockwise direction (viewing Fig. 6) and at the same speed.

Cooperating with the lower work supporting and coating rolls 31 and 38 is a smoothfaced cylindrical upper roll 69 (Fig. 6) provided on its opposite ends, as shown in Fig. 3, with cylindrical portions 10 and 1I, respectively, of reduced diameter. Thesereduced ends 10 and 1I engage and freely rotate on conical points 12 and 13, respectively, supported from an arm 14. The point 13 is formed on one end of a rod constructed and mounted as shown in Fig. 3 in the same manner as the rod 41 (Fig. 8), so that the roll 69 may be mounted or removed in the manner of the rolls 31 and 38.

The arm 14 is provided with a rear yoked end (Fig. 1), a front yoked end 16, and a central curved bridge 11 (Figs. l and 6) overlying the upper roll 69 and forming a guard therefor. The rear yoked end 15 is provided with a pair of conical points 18 (Figs. 2, 3, 4, and 6) which engage, respectively, centers formed in the opposite sides of a yoked arm 19 (Figs. 1, 2, 3, 4, and 6) which is pivotally mounted on the rockshaft 25 (Figs. 4 and 6). As indicated in Fig. 4, the arm 14 is adapted to be -tipped upright, swinging into this position on the conical points 18 engaged with the centers on the arm 19. But since the arm 19 is itself pivotally mounted on the rock-shaft 25, it is clear that the pivotal axis of. the arm 14 on the arm 19 may be shifted. Stated in another way, any movement of the arm 19 about its lpivotal axis, formed by the rock-shaft 25, necessarily causes the centers on the arm 19, and therefore the conical points 18 and the arm 14, to move also. The purpose of this construction will be described hereinafter,I

but it may be said that thepivotal axis of the arm14 on the arm 19 may be maintained in a fixed position of adjustment during the operation of the machine by meansof a thumb nut 80 (Figs. 4, 6 and '1) and an adjustable stop-screw 8I (Fig. 6). As best shown in Fig. 6 the thumb nut 80 is threaded on the end of a rod 82 projecting rearwardly from the trough I I) through a lug depending from the arm 19. 'I'he thumb nut 88 holds a washer in engagement with the lug on the arm 19 so that the swinging of. the arm 19 to the left on the rock-shaft 25, viewing Fig. 6, may be limited as desired. The swinging of the arm 19 to the right from the position determined by the thumb nut 80 is prevented by the stopscrew 8I which, as shown in Fig. 6, is carried by the arm 19 and is adapted to abut the rear wall I6. y y

The upper roll 68 may be moved towards the lower work supporting and coating rolls 31 .and

, 38 under the influence of gravity. The approach the roll 88 thus causing it to subject the sole to' a' stop-screw 8|, the bottom ends of the screws 83 and 84 ridealong the tops of the side walls I3 and |4, respectively.

The illustrated embodiment of the present invention operates upon short, ilexible work pieces, such as shoe soles. In this class of work only one face is coated, and therefore it is essential that the upper roll 88 be kept free of coating in order to prevent soiling the uncoated face of the work. This desideratum is4 obtained, whether work is in the machine or not, by maintaining,`

through the adjustment of the screws 83 and 84, the periphery of the roll 88 spaced from the peripheries of the rolls 31 and 38 a distance at least greate'r than the thickness of the work.

In order to yieldingly resist the tendency of the shoe soles to elevate the roll 88 during their passage through the machine, the side walls I3 and I4 are provided, respectively, with rotatable blocks 81 (Fig. 7) and 88 (Fig. 4)'each provided with an opening which loosely receives a rod 88 threaded at its lower end upon a nut 80. Coiled around each rod 88 is a spring 8| interposed betweenthe nut 80 and a washer 82 loosely mounted on the rod beneath the block. The upper end of each rod 88 is provided with a thumb-piece 83. With this construction the rods 88 may be swung into a position where the upper ends thereof 'are received, respectively, in slots 84 and 85 (Figs. 1 and 2) formed on the front yoked end 18 and against which the thumb pieces 83 rest in order to hold the upper roll 88 yieldingly in operative position. i

The illustrated embodiment of thepresentinvention ls employed in coating the ilesh face of shoe soles of both the plain type and the shankedout type. During the passage of a sole through the machine the relative locations of the peripheries of the

rolls

31, 38 and 88 cause the sole to bend and to be Iwrapped 'about the periphery of tractive effort impelling it to the left, (Fig. 6)',

notwithstanding the fact that the spaces between the periphery of the roll 88 and the peripheries of the respective rolls 31 and 38 are too great to allow the adjacent rolls tonip the work. With this construction and mode of operation the esh' surface of the rolls 31 and 38, thus causing them to drive the coating into the body portion of the sole through the opened pores in the convexly bent esh face. The pressure exerted by the bent sole on the surface of the roll 38 causes the synthetic rubber surface thereof -to adapt itself to the surface of the flesh face of the sole across its width, thus insuring the simultaneous application of coating to the planiform and nonplaniform surfaces of a shanked-out sole.

In order to increase the tendency of the bent sole to press itself iirmly into engagement with 'the coating rolls`31 and 38, the arm 14 is provided with two small rotatably mounted cylindrical rolls 88 and 81 (Fig. 6), one of which, the roll 88, engages the leading edge of the sole first, and the other one of which, the roll 81, engages the trailing edge of the sole last during the passage of the sole through the machine.

'I'he rolls 88 and 81 are similar in construction. The opposite ends of the roll 88 are provided with conical centers which rotate on ,

conical points

Coiled about the rod |04 and interposed between the washer |08 and a second washer ||0 on the rod 04 is a spring which yieldingly resists any tendency of the sole to press the roll 88 up- |08 is longer than the end |01 and is not bent upwardly at so great an angle as the end |01.

' With this construction, when the

rolls

88 and 81, are in operating position, theroll 81 is normally nearer the roll 38 than the roll 88 is near the roll 31. The

rolls

88 and 81, or either of them, may be thrown out of operation without removing the rods |04 from the slots |08, as shown in construction lines "in Fig. 4, by swinging the arms 88 slightly upwardly and away from the bridge 11.

The

rolls

88 and 81 increase the tendency of the bent sole to press itself rmly into engagement with the coating rolls 31 and 38, but with thick soles, which give the greatest resistance to the bending action, it is desirable that they be caused to press themselves very rmly into engagement with the synthetic rubber surface of the roll 38 to insure that the skived or non-planiform portions are completely coated. To this end the pivotal mounting of the arm 14 upon the the work. With the roll 69 equally spaced in this manner from the rolls 31. and 38, the amount of sole flexion at the contact points of. the sole with the rolls 31 and 38 will be equal. Stated in another way, the sole will press itself equally hard upon each of the rolls 31 and 38 because the amounts of flexion at those points are equal. If, however, the roll 69 is nearer to one of the lower rolls than it is to the other, the nearer together will be the contact point of the roll 69 with the grain face of the sole and the contact point of the lower roll in question with the flesh face of the sole, and the greater will be the flexion of the sole in the vicinity of the two rolls. The greater the flexion. the greater will be the pressure of the sole upon the lower roll. This'is of practical importance in coating the skived portions of thick soles. The roll 38, being made of yielding material, is adapted to conform to the flesh face of the sole across its width, thereby coating the skived as well as the unskived portions thereof; but the thicker the sole, the harder must it press itself into the roll 38 to effect this coating and the greater will be the resistance both to exion of the sole because of its thickness and to a depression of the material of the roll 38. The pressure of a sole of a given thickness on the roll 38 when the roll 69 is equally spaced from the rolls 31 and 38 may be just sufficient to cause a coating of the skived portions of the solel but insumcient to cause a coating of the skived portions of a thicker sole. As a consequence, by adjusting the thumb nut 80 and the stop-screw 8|, the arm 14 may be moved to the left, viewing Fig. 6, to cause the upper roll 69 to be located nearer to the roll 38 than to the roll 31, thereby insuring a proper coating of the skived portions of thick soles.

Viewing Fig. 6, it will be seen that in any swinging of the arm 14 upon the pivotal axis comprising the conical points 18, the roll 96 has a greater arcuate movement than do the

rolls

69 and 91 and the roll 69 has a greater arcuate movement than does the roll 91. More particularly, the peripheral portions of the roll 69 which are adjacent the roll 31 have a greater arcuate movement than do the peripheral portions of the roll 69 which are adjacent the roll 38. It has been Vpointed out labove that the downward swinging of the arm 14 is limited by the adjustable screws `83'and 84. With this construction and operation, it is apparent that with the thumb nut 88 and the stopscrew 8| so adjusted as to cause the roll 69 to be located centrally over the rolls 31 and 38, the screws 83 and 84 may be adjusted to cause a downward swinging of the arm 14 on its pivotal axis under the inuence of gravity. This downward swinging, because of the above stated position of the roll 69, causes the peripheral portions of the rolli 69 which are adjacent the roll 31 to approach closer to the roll 31 than the peripheral portions of the roll 69 which are adjacent the roll 38 approach the roll 38. IStated in anotherl way, by reason of the adjustable screws 83 and 84 and the pivoting o`f the arm 14, the roll 69 may be moved to a position in which it is closer to the roll 31 than to the roll 38. It may be in this swinging of the arm 14 to position the roll 69 as just stated, that the

rolls

96 and 91, or either of them, may become improperly positioned. If this result occurs, a repositioning of the rolls 96 vand 91 is easily effected by adjusting the thumb nuts |85. Moreover, by manipulating the thumb nut 88 the roll 69 may be adjusted to a position in which it is closer to the roll 31 than to the roll 38. With this construction and mode of operation the mawidely in thicknesses.

The soles are fed into the machine from a table iI3 supported partially by extensions (Figs. 2 and 6) of the side walls I3 and I4 and partially by a post II4 (Fig. 4) secured to and projecting 'upwardly from the base I2.

In order that the soles may be coated properly, doctors for controlling the amount of coating material delivered to the work are associated with the up-going sides of the rolls 31 and 38, respectively. The up-going side of the roll 31 is associated with a doctor II6 (Fig. 6) comprising a plate (Fig. 3) secured to the front wall I6 and provided with a rear straight edge spaced from the peripheral surface of the roll 31 about .0015 of an inch throughout its extent. In order to break up bubbles and to prevent strings of latex from being flicked upwardly into engagement with the'upper roll 69,the extensions of the side walls I3 and I4 support pivotally a plate III the rear edge of which is beveled to overlie closely the roll 31. The front edge of the plate II6 is provided with a tail II1 which carries an adjustable stop screw II8 (Fig. 6) arranged to engage the under surface of the table II3 and hold the beveled edge of the plate II6 in its desired position of adjustment. As shown in Fig. 6, the top surface of the plate II6 lies in a plane above the uppermost element of the surface of the roll 31.

The up-going side of the roll 38 is associated with a doctor II9 (Figs. 6 and 9) comprising a at plate having a straight edge |28 spaced closely from the peripheral surface of the roll 38 throughout its extent. The doctor |I9 is adapted to be adjustably secured to the bar 62, and to this end the upper portion of the bar 52 is cut away to provide a at surface I2I (Fig. 9) whichv is slightly longer than the doctor I I9, as indicated in Fig. 3. The doctor II9 is provided near its ends with a pair of slots I 22 which embrace, respectively, the shanks of screws |23 for securing the doctor I I9 to the surface I2| with the straight edge |02 in a desired position of nearness to the roll 38. The doctor II9 is also provided near its ends with a second pair of slots |24 which embrace, respectively, posts I25 (Fig. 9) threaded into the bar 52 and rising vertically from the flat surface I2I. Mounted on the posts I 25 is a straight edge |26 which serves to break up bubbles of latex and to prevent strings thereof from being flicked upwardly from the doctor II9 into engagement with the roll 69 in the same manner that the beveled edge of the plate II6 performs these functions in connection with 'the roll 31 and its doctor II5.

In operating the machine to coat the flesh faces of soles. the operative with her right hand places a sole flesh face down upon the table II3 and pushes it through the space between the plate H6 and the roll 96 so that the leading edge of the sole passes across and over the roll 31 into engagement with the roll 69. The sole is pushed hard enough so that it commences to bend downwardly in engagement with the roll 69, and since `the roll 31 is driven, as soon as the leading edge `of the sole begins its downward bending, traction is produced on the 'sole by the rolls 69 and 31 to ing edge of the sole, thereby in turn causing the grain face o'f the sole -to be wrapped around a portion of the periphery of the roll 88 and causing the esh face of the sole to press against the rolls 31 and 38 at points spaced from the wrapped portion. In this position the flesh face of the sole is bent convexly about an axis extending at right angles to the length of the sole. As the leading edge of the sole continuas in its passage through the machine it next tends to pass upward into the space between the

rolls

88 and 81.

In order to prevent the turned-up leading edge of the sole from passing upward into the space between the

rolls

88 and 81, the bridge 11 supports along its rear edge portion (Figs. 1 and 6) a guard |21. Thisguard comprises a plate the body of which conforms to the curvature ofthe bridge 11 and the lower portion |28 of which is bent radially towards the roll 68 and terminates near it. As shown in Fig. 6, the radial portion |28 is located below the axis of the roll 68 with the result that the radial portion |28 is inclined rear- .wardly downwardly, or to the left, viewing Fig. 6.

With this construction, the turned-up leading edge of the sole, in striking the radial portion |28, is bent downwardly and so passes under the roll 81.

When the leading edge of the sole is bent downwardly under the roll 81, the esh face of the sole is wrapped around a portion of the periphery of the roll 38. The feed of the sole continues, thetrailing edge of the flesh face of the sole successively passing over the table ||3, the plate ||6, the roll 31 and the roll 38. As soon as the trailing edge clears the space between the rolls 31 and 38, the leading edge of the sole has been projected out of the space between the peripheries of the

rolls

38 and 81 far enough for the operative to grasp with her hand the leading edge of the sole, which extends conveniently downwardly because of the bending imparted by the roll 81, after which the sole passes out of the machine. l

From the foregoing it .will be seen that in spite of the fact that the upper roll 88 is spaced from the'peripheries of the lower rolls 31 and 38 a distance at least greater than the thickness of the work, there is suflicient traction to feed the sole through the machine so long as thesole is bent in engagement with the

rolls

31 and 68, or 31, 88, and 38, or 31,*88, 38 and 81, and also, during further passage of the sole through the machine, when bent in engagement with the

rolls y

88, 38, and 81. During the feed of the-sole the function of the roll 86 is to 'maintain the trailing portion of the sole substantially lilat over the table I |3 to cause a greater flexion over the roll 31 than would be the case without the roll 88.

It has been pointed out above that when the sole engages the upper roll 68 and the lower rolls 31 and 38, the ilesh face of the sole is bent convexly about an axis extending at right angles to ythe length of the sole during the application of the coating thereto by the rolls 31 andy 38. By reason of the guard |21` and the roll 81, however,

vafter the ileshfaceof the sole has been bentas just stated, it is then bent concavely about an 38 iirst cooperate in the feed of the sole, then the

rolls

31, 68, 38 and 81 cooperate, and then finally the

rolls

88, 38 and 81 cooperate.

Nothing herein explained is to be interpreted as limiting the various features of the present invention in the scope of its application to use in connection with the particular machine or the particular mode .of operation 'or any combination thereof selected for purposes of illustration and explanation. While the particulars of construction herein set forth are well suited to one mechanical form of the invention and to the uses to which it is put, it is not limited as to these uses, nor to vthese details of construction, nor to the conjoint use of all its features, nor is it to be understood that these particulars are essential since they may be modified within the skill of the artisan without departing from the true scope of the actual invention, characterizing features of which are set forth in the following claims by the intentional use of generic terms and expressions inclusive 'of various'modiiications.

What is claimed as new, is:

1. In a cementing machine, the combination with a pair of lower work supporting rolls, at least one of said rolls applying coating to one face of the work, an upper roll cooperating therewith during the feed of the work, and means for holding the upper roll operatively spaced from the lower rolls a distance at least greater than the thickness of the work, of means for positioning the upper roll in said operatively spaced relation closer to one of the lower rolls than to the other.

2. In a sole cementing machine, the combination with a pair of lower work supporting rolls, at least one of said rolls applying coating to one face of the work, 'one of said rolls engaging the leading edge of the sole ilrst and the other one of said rolls engaging the trailing edge of the sole last, an upper roll cooperating with the lower rolls'during the feed of the sole and means for holding the upper roll operatively spaced from the lower rolls a distance at least greater than the thickness of the sole, of means for positioning the upper roll in said operatively'spaced relation closer to the lower roll which engages the leading edge of the sole ilrst than to the other lower roll.

3. In a sole cementing'machine, the combination with a pair of lower work supporting rolls, at least one of said rolls applying coating to one faceof the work, one of said rollsengaging the roll in said operatively spaced relation closer to the lower roll which engages the trailing edge of the sole last than to the other lower roll.

4. In a cementing machine, the combination with a pair'of lower work supporting rolls, at least one of which applies coating to one face of the work, a pivoted arm, an upper roll carried therebyengaged with the uncoated face. of the work and cooperating with the lower rolls in the feed of'the work, and means for holding the upper 'roll in an operating position spaced from thelower rolls a distance'at least greater than the thickness of the work, of means forrelatively shifting thepivotal axis of the arm and the lowerrolls.

5. In a cementing machine, the combinationrolls, at least one of which applies coating to one face of the work, an upper roll cooperating therewith during the feed of the work, apivoted arm for supporting the upper roll, resilient means interposed between the frame and the arm tending to force the upper roll towards the lower rolls, and means for holding the upper roll in an operating position spaced from the lower rolls a distance at least greater than the thickness of the Work, of means for relatively shifting the pivotal axis of the arm and the lower rolls.

6. In a cementing machine, the combination with a pair of lower work supporting rolls, at least one of which applies coating to one face of the ork, an arm pivoted on an axis in the rear of the axes of said rolls, and a second ann pivoted on the ilrst arm, of an upper roll carried by the second arm engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work.

7. In a cementing machine, the combination` with a pair of lower work supporting rolls, at least one of which applies coating to one face of the work, an arm pivoted on an axis in the rear of the axes of said rolls, and a second arm pivoted on the first arm on an axis in the rear of the axes of said rolls, of an upper roll carried by the second arm engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work.

8. In -a cementing machine, the combination with a pair of lower work supporting rolls, at least one of which applies coating to one face of the work, an arm pivoted on an-axis in the rear of the axes of said rolls, a second arm pivoted on the rst arm, and an upper roll carried by the second arm engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work, of means for adjusting the pivotal axis between the first and second arms to any one of a plurality of positions and for maintaining said pivotal axis in said position of adjustment.

9. In a cementing machine, the combination with a pair of lower work supporting rolls, at least one of which applies coating to one face of the work, an arm pivoted on an axis in the rear of the axes of said rolls, a second arm pivoted on the rst arm, an upper roll carried by the second arm engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work, and means for adjusting the pivotal axis of the second arm with the first arm to any one of a plurality of positions and for maintaining said pivotal axis in said position of adjustment, of means for moving the axis of the upper roll relatively to the axes of the lower rolls while maintaining said xed position of adjustment of the pivotal axis of the second arm with the first arm.

10. In a cementing machine, the combination with la pair of lower work supporting rolls, at least one of which applies coating to one face of the work, a. pivoted arm, an upper roll carried thereby engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work, and means for holding the upper roll in an operating positionv spaced from the lower rolls a distance at least greater than the thickness of the work, of at least one auxiliary roll smaller than the upper roll mounted upon the pivoted arm and cooperating with the upper r'oll and one of the lwer rolls in the feed of the work.

l1. In a cementing machine, the combination with a pair of lower work supporting rolls, at least one of which applies coating to one face of the work, a pivoted arm, an upper roll carried thereby engaged with the uncoated face of the work and cooperating-with the lower rolls in the feed of the work, and means for holding the upper roll in an operating position spaced from the lower rolls a distance at least greater than the thickness of the work, of at least one auxiliary roll smaller than the upper roll pivotally mounted upon the pivoted arm and cooperating with the upper roll and one of the lower rolls in the feed of the work.

12. In a cementing machine, the combination with a frame, a pair of lower work supporting rolls, at least one of which applies coating to `with a pair of lower work supporting rolls, at

least one of which applies coating to one face of the work, an arm pivoted on an axis in the rear of the axes of said rolls, a second arm pivoted on the iirst arm, an upper roll carried by the second arm engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work, at least one third arm pivotally mounted on the second arm, an auxiliary roll mounted on said third arm, and means for adjusting the pivotal axis between the first and second arms to any one of a plurality of positions and for maintaining said pivotal axis in said position of adjustment, of means permitting a swinging of the third arm on the second arm while the pivotal axis between the ilrst and second arms is maintained adjusted.

14. In a cementing machine, the combination with a pair of lower work supporting rolls, at least one of which applies coating to one face of the work, a pivoted arm, an upper roll carried vthereby engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work, and means for holding the upper roll in an operating position spaced from the lower rolls a distance at least greater than the thickness of the work, of two auxiliary rolls pivotally mounted, respectively, upon the pivoted arm, one of said auxiliary rolls lcooperating with the upper roll and one of said lower rolls in the feed of the work and the other of said auxiliary rolls cooperating with the upper roll and the other of said lower rolls in the feed of the work. g

15. In a cementing machine, the combination with a pair of lower work supporting rolls, at least one of which applies-coating to one face of the work, a pivoted arm, a second arm pivoted on the flrst arm, an upper `roll carried by the second arm engaged with the uncoated face of the work and cooperating with the lower rolls in the feed of the work, two auxiliary rolls pivotally mounted, respectively, upon the second arm, one of said auxiliary rolls cooperating with the upper Aroll and one of said lower rolls in the feed of the work and the other of said auxiliary rolls cooperatingwith the upper roll and the other of said lower rolls in the feed of the work, and means for adjusting the pivotal axis between the rst and second arms to any one of a plurality of positions and for maintaining said pivotal axis in said position of adjustment, of means operatively connected, respectively, to the second arm and to the auxiliary rolls for permitting movements of the axes of said auxiliary rolls independently of each other during the feed of the work while the pivotal axis between the rst and second arms is maintained adjusted.

16. In a cementing machine, the combination with a frame, a trough therein for the coating, and a receptacle, for a source of coating supply 'having an outlet connected to the trough and located thereabove during the operation of the machine, of means for lowering the receptacle to locate its outlet below thetrough, including a rock-shaft journaled on the frame, an arm carried by the rock-shaft and pivotally connected to the receptacle, a link pivotally connected to both the frame and the receptacle, and an arm for rocking the rock-shaft.

17. In a cementing machine, the combination with a frame, a trough therein for the coating, and a receptacle, for a source of coating supply, having an outlet connected to the trough and located thereabove during the operation of the machine, of means for lowering the receptacle to locate its outlet below the trough, including a rock-shaft journaled on the frame, an arm carried by the rock-shaft and pivotally connected to the receptacle, a link pivotally connected to both the frame and the receptacle, an arm for rocking the rock-shaft, and means for preventing the rock-shaft from rocking. A

18. In a cementing machine, the combination with a roll having on at least one end thereof a reduced cylindrical portion, of means for supporting at least the cylindrical portion comprising a stationary split sleeve provided with external threads, a rod longitudinally movable in the sleeve, said rod having a conical point upon which the said cylindrical portion rotates, and a handwheel having internal threads engaged with the external threads on the sleeve for clamping the sleeve on the rod.

19. A cementing machine having, in combination, a trough for containing coating material, a coating roll rotatable in the trough, a support mounted in the trough, a doctor secured to the support and provided with a scraping edge located closely adjacent the up-going side of the coating rolls, posts extending upwardly from the support, and a splash guard mounted on the posts for breaking up bubbles of the coating material and for preventing an upward flicking of coating material above the roll by the doctor.

20. A cementing machine having, in combination, a trough for containing coating material,`

a coating roll rotatable in the trough, a support mounted in the trough, posts extending upwardly from the support, a doctor comprising aplate adjustably secured to the support and .provided with slots embracing the posts and with a scraping edge located closely adjacent the up-going side of the coating roll, and a splash guard mounted on the posts above the doctor for breaking up bubbles of coating material and for preventing an upward ilicking of coating material above the roll by the doctor.

WALTER P. OSGOOD.