US1425543A - Wood-heel-clamping device - Google Patents

Description

F. A. REARDON. WOOD HEEL CLAMPING DEVICE.

APPLICATION FILED NOV. 22 1918.

Patented Aug. 15, 1922,

Freoifl .Reardon Lilia FRED A. REARDON, OF E-IAVER-I-IILL, lliASSAC-HUSETTS, ASSIG-NQR TO HAIVXEL SHOE MACHINERY COMPANY, A CORPORATION 013 MASSAGHU$ETTS HOODl-IEEIrCLAl /IFING DEVICE.

Application filed November 22, 1918.

T 0 aZZ whom it may concern:

Be it known that I, Fnno A. Brannon, a citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in lVood-Heel- Clamping Devices, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to devices employed in the manufacture of shoes and more speciiically to a clamping mechanism for assisting an operator in attaching wood heels to the soles of shoes.

The present i vention consists in certain improvements in the structure disclosed in my Patent No. 1,368,935, dated Feb. 1, 1991.

In the above noted patent a C-shaped frame is provided upon the opposed extremities of which are carried a pair of complemental clamping'members', one of which is adapted to engage the inner surface of the sole within the shoe counter, while the other engages the tread surface of the heel. The sole engaging member is provided with a pluralityof nail guiding devices which assist the operator in driving the fastening nails, and said member is also mounted for adjust-- ment by the operator toward and from the tread engaging member whereby to clamp the heel in place upon the sole preparatory to driving the nails. The sole engaging member is mounted for such adjustment upon the end of a screw threaded rod which engages within a threaded opening in the shaped frame and which has a thumb nut. or other suitable means for turning it, fixed upon its free extremity.

To readily mount a shoe upon the sole engaging member requires that the latter be retracted some distance from its clamping position and in practice it is found that the above arrangement for adjusting this memher is not entirely satisfactory due to the eX- cessive amount of time consumed in rotating the screw rod. The present invention seeks to avoid the above difliculty by the provision of means permitting the rapid approach and separation of the clamping members, while at the same time providing for subjecting the work held between said members to a considerable degree of pressure. More specifi ally stated, the invention comprises the employment of independently operated adjusting devices for the movable clamp memier, one of said devices acting to move said Specification of Letters Patent.

Patented ring. 1.5, Serial No. 263,765.

member rapidly to and from operative position, while the second imparts a slow move ment thereto for securing the desired clamping pressure.

In the device of the above noted patent, the C- haped frame is mounted to turn about a horizontal axis to permit inversion of the shoe during the carrying out of the clamping and nailing operation, a manually releasable bolt being provided for locking the frame in desired position. As that end of the frame which supports the nail guiding clamp member is much heavier than the other, it is evident that if this end of the frame be uppermost when the bolt is released, the frame will automatically turn to that position in which said clamping member is lowermost, this being the position for placing the shoe in the clamp and for removing it after the completion of the operation. The present invention provides for taking full advantage of this circumstance by arranging for releasing the locking bolt, by means of a foot operated treadle, whereby upon completion of the nailing operation the workman is enabled to bring the parts into proper position for removal of the shoe simultaneously with his movement of laying aside the nailing tools, thus avoiding loss of time and increasing production.

Other objects and advantages of the pres ent invention together with improved details of construction and desirable combinations of parts will be hereinafter more fully set forth in the accompanying specification and particularly pointed out in the claims, reference being had to the accompanying drawings as disclosing a preferred embodiment thereof and in which,

Fi 1 is a side elevation of the device;

1 i2 is a front elevation thereof, and

Figs. 3 and 4-. are sectional details to enlarged scale of the clamp adjusting mechanism.

1 is a frame or base having eXtending upwardly therefrom a pair of posts 2, 3 provided at their upper extremities with bearings i, 5, in which is mounted for rotation a shaft 6. The shaft 6 is held against longitudinal movement in its bearings by means of fixed collars 7, 8, and has fixedly mounted upon one end thereof a yoke-member 9, the opposed extremities of which are provided with aligned openings 10, 11. 12 is a C- shaped frame having a pair of spaced apart cars 13, 14; provided with aligned openings adapted for the reception of a pin which extends through the openings 10, 11. of the yoke 9, and through the openings of ears 13, I l, whereby the C-shaped frame is pivotally supported.

The CI-shaped frame has opposed extremities 16, 1.7, the extremity 16 being bifurcated to form a pair of opposed arms 18, 19, between which is pivotally supported a lever 20 by means of a pin 21. Une end of the lever 20 is provided with an enlargement 22 having a flat surface and constituting a clamping member adapted for engagement with the tread si'uface of a heel, while the opposite end of the lever 20 is provided with an adjustable stop member 23, herein shown as a thumb screw, arranged for engagement with the surface of the frame 12, whereby the inclination of the surface of the clamping membed 22 may be determined, A spring 2 1, surrounding the pin 21 and engaging the end of lever 20, acts to keep the adjustable stoi member 23 constantl 1 in contact with the frame.

Shdably guided along the surface 22 of the lever 20 1s a stop member 25 arranged to be held in adjusted position upon said surfaces by means of a set screw 26, such stop member being intended to bear against the rear surface of the shoe heel adjacent the tread thereof toprevent any slipping; of the heel along said surface. y

The extremity 17 of the frame 12 is provided with an opening 27 serving as a guide for a longitudinally movable rod :28, this rod, as herein. shown, being provided with ascrew thread 29 throughout substantially its entire length. Mounted in any suitable manner upon one extremity of the rod 28 is a second clamping member 30 having a surface 31 adapted for engagement with the inner side of the shoe sole when the clamping member 30 has been positioned within the counter portion of the shoe. The meinber 30 is also provided with a series of nailguiding tubes 32 which extend entirely through the member 30 and open in the surface 31, these tubes being intended to assist the operator in driving the nails into the heel when the latter has been clamped between the opposed clamping surfaces 22 and 31. Upon the opposite extremity of the rod 28 is fixed a hand crank or equivalent means, whereby said rod may be rotated.

Extending laterally from the extremity 17 of the frame 12, are a pair of lugs 34, 35, these lugs providing bearing openings within which is rotatably supported a shaft 36. 37 is a chamber formed within the part 17 between the lugs 35, 34 and opening into the guideway 27. Within this chamber and between the lugs 3a, 35 is a sleeve 88 slidably keyed upon the shaft 36, this sleeve being kept from ei'ulwise motion by engagement withthe lugs 3st, Centrally mounted spas upon said sleeve, and fixed thereto, is a worm pinion 39, the teeth of which are arranged to engage the screw thread upon the rod 28.

One end of the shaft 36 extends beyond the lug 35, and is provided with an enlargement 4-0 against which bears one end of a spring; 41 surrounding the shaft, and whose opposite extremity is seated within a counterbore 42 in said lug 35. i3 is a sleeve surrounding the shaft 36, and fixed against rotation within the bearing opening in lug 34L, said sleeve being provided at its free extremity with one element l-l of the locking clutch. 4:5 is a second sleeve fixed to the shaft 36, and provided with a complemental clutch element 46 arranged to have lockingengagement with the clutch element lei. These clutch elements may, if desired, be of the ratchet type herein shown whereby they may be freely rotated in onedirection but require positive disengagement before they can be oppositely rotatedl lilpon the sleeve i5 is fixed a hand wheel $7, or equivalent mfeans, whereby said sleeve, together with shatt 36, may be rotated, and whereby the shaft 36 may also be moved longitudinally against the action of the spring ii to disengage the clutch elements 41 1-, 46, these elements being normally held in engagement by the action ofspring l1.

in the collar 7 formed a pair of diametrically opposed openings 48, with which is ad i bin openings in lugs 50, 51 carried upon the frame 1. a spring 52 being interposed between the lug 51 and a collar fixed to said bolt and normally acting to cause engagement of the bolt with one of the openings 48. 53 indicates a connection between said bolt and any suitable treadle device by means of which the bolt may be retracted to permit reversal of the yoke 9 in its in the position shown in Fig. 1. The operator first draws a shoe over the clamping 'pted to engage alocking bolt 49 slidable lOO member 30 and brings the surface 31 in com tact with the inner surface of the sole of the shoe. If a heel. has not already been secured to the sole surface by cement or glue, the operator thereupon places a heel in position upon such sole surface and by pulling outwardly upon the hand wheel 4C7 first disengages the clutch elements 4L4, 4L6, and there after by turning Said hand wheel rotates the pinion which acts upon the screw thread 29 to rapidly raise the clamp 30, said screw thread at this time constituting a cylindrical rack cooperating with the pinion 39.

l Vhen the tread surface of the heel has been brought into contact with the clamping surface 22 of the lever 20, the operator thereupon rcleases the wheel 1-17, the spring ail immediately acting to draw the clutch ele ments a l, 46 into locking engagement. The operator now, by turning the hand crank 33, rotates the rod 28 and as the pinion 89 is now loclred against rotation, said pinion acts as a nut cooperating with the screw thread 29, whereby as the rod 28 is rotated, it is slowly advanced, thus bringing the clamp elements 30, 22 against the inner surface of the sole and the tread surface of the heel respectively with a considerable degree of pressure, the amount of such pressure being dependent upon the pitch of the screw 29 and the force exerted by the operator upon the hand crank 33,

is the tread and seat surfaces of heels are relatively inclined to various degrees, the adjustable stop 23 has been provided whereby the operator is enabled to bring the surface of member 22 into substantial co-incidence with the tread surface of the heel whatever may be the inclination of the latter, and by the provision of the adjustment for stop 26 the operator is enabled to cause the latter to bear firmly against the rear surface of any heel, thus preventing slipping of the latter along the surface of member 22.

After the heel has been securely clamped the operator withdraws the bolt 49 and tips the entire frame 12 about the axis of the shaft 6, the frame being again locked by engagement of the bolt 49 with the diametrically opposed opening 48. In this position of the parts the operator places nails in the tubes 32 and by the use of a suitable driver and hammer causes the nails to be driven into the heel through the sole, thus firmly securing the heel in place. Upon the completion of the driving of the last nail, the operator places his foot upon the treadle, and releases the bolt 49, this movement taking place substantially simultaneously with the movement necessary to lay aside the ail driving instrumentalities. Immediately upon release of the bolt the frame 12 automatically reverses itself due to the fact that that end thereof which carries the nail driving mechanism is much heavier than the opposite extremity, such reversal of the frame restoring the parts to initial position ready for removal of the shoe.

The operator now slightly reverses the movement of the crank 33 to relieve the pressure between the clamping elements and thereafter by manipulation of wheel a7 first disengages the clutch elements 44, 46 and then rapidly separates the clamp elements by rotating said wheel i? the parts thus being placed in position for the removal of the shoe and for placing of another shoe in position for attaching the heel thereto. It is evident that by the above arrangement of parts the clamping members may be rapidly moved toward and from each other by manipulation of the wheel 47, and when in position for clamping the shoe parts between them may be subjected to suitable clamping pressure by means of the crank 33, thus accon'iplishing a great saving of time as compared with the operation'of prior devices.

While the above mechanism is a preferred form of the invention, it is to be understood that the latter is not to be limited to the specific details herein disclosed, but that it is intended to cover all such variations and modifications of the same as may fall within the scope of the appended claims.

Having thus described the invention and a preferred embodiment of the same, what I claim and desire to secure by Letters Patent of'theUnited States is,-

1. In a heel nailing device, a clamp-frame, a supporting frame therefor, a heel-clamp member mounted upon the clamp-frame, a rod provided with a screw-threaded portion and mounted for endwise sliding and rotary movement in the clampframe, means for turning said rod, a second heel-clamp member operatively connected to and partaking of the movements of said rod toward and from the first-named clamp-member, a pinion mounted in said clamp-frame and meshing with the screw-threaded portion of said rod, means for turning said pinion to impart endwise movement to said rod, and means for restraining said pinion against turning.

2. In a heel nailing device, a clamp-frame, a heel-clamp member mounted thereon, a rod provided with a screw-threaded portion and mounted for endwise sliding and rotary movement in said frame, means for turning said rod, a second heel-clamp member operatively connected to and partaking of the movements of said rod toward and from the first-named clamp-member, a pinion mounted in said frame and meshing with the screw-threaded portion of said rod, means for turning said pinion to impart endwise movements to said rod, and means for releasably locking said pinion against turning.

In a heel nailing device, a clamp-frame, a heel-clamp member mounted thereon, a rod provided with a screw-threaded portion and mounted for endwise sliding and rotary movement in said frame, means for turning said rod, a second heel-clamp member mounted upon and movable with said rod toward and from the first-named clampmember, a pinion mounted in said frame and meshin with the screw-threaded portion of said rod, means for turning said pinion to impart endwise movements to said rod, and means for releasably locking said pinion against turning.

In a heel nailing device, a clamp-frame, a heel-clamp member mounted thereon, a

rod provided with a sorew threaded portion and mounted for endwise sliding and rotary movement in said frame, means for turning said rod, asecond heel-clamp mem ber mounted uponand in axial alinement a heel-clamp member mounted thereon, a

rod providedwith a screw-threaded portion and. mounted for endWise sliding and rotary movement in said frame, means for turning saidrod,'a second heel elamp memher operatively connected to and partakin of the movements of said rod toward ant from the first-named clamp-member; a pinion mounted insaid frame and meshing With the screw-threaded portionof said rod,

means for turning said pinion to impart endWise movements to said rod, and a spring-actuated locking device normally restraining said pinion against turning.

6. In a heel nailing device, a olamp-frame, a heel-clamp member mounted thereon, a sorew-threaded rod journaled for endWise sliding and rotary movementin said frame, means for turning said rod, a second heelclamp member mounted upon and partaking oi? the endwise movements of said rod, a pinion meshing with the threads of said rod and journaled in said frame, 'an end- Wise movable shaft to which said pinion is slidingly fitted in permanent driving relation, interengaging clutch elements carried by said shaft and frame, respectively, and a spring interposed between said frame and shaft for detachably maintaining said cliiit'oh-elements in engagement.

In testimony whereof, I have signed my nameto this specification;

FRED A. REARDON.

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