US933192A - Shoemaker's repair-jack. - Google Patents

Description

H. P. MARSH.

SHOEMAKEBS REPAIR JACK.

ABPLIOATION FILED DBO. 2a, 1908.

Patented Sept. 7, 1909.

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HIRAM F. MARSH, or sonjvnnivnun, NEW YORK.

'SHOEMAKERS REPAIR-JACK.

Specification of Letters Patent.

Patented Sept. '7, 1909.

Application filed December 28, 1908. SeriaL'No. 469,632.

To all whom it mag/concern:

Be it known that I,'H1RAM F. MARSH, a citizen of the. United States, residing at Gouverneur, in the county of St. Lawrence and State of New York, have invented a new and useful Shoemakers Repair-Jack, of,

which the following is a specification.

This invention relates to improvements in shoemakers jacks, and has for one of its objects the provision of a standard on which,

the jack stand is rotatable in a vertical plane. Another object is the provision of a last post rotatable'on the. stand in a plane transp j with a suitable pawl. The usual workholdverse the plane of movement of the latter.

A further object is the provision of a means whereby the stand may be secured in any position on either side of the vertical.

A still further object is the provision of a tensioning and last post.

With the above and other objects in View, as will'more fully hereinafter appear, the present invention consists in certain novel details of construction and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims, it being understood that various changes in the form, proportion, size and minor details of the device may be made Without departing from the spirit or sacri-" 'ficing any of the advantages of the invention. In the accompanying drawings forming a part of this specification :Figure 1 is a longitudinal sectional. view of the device,

Fig. 2 is a detail end view of the adjusting disk. Fig. 8 is a transverse sectional view on the line 33, Fig. 1 disclosing the strap tightening means. of the means for maintaining the strap in tightening position. Fig. 5 is a detail side elevation of an improved form of patching last and means for fitting the same within a shoe. Fig. 6 is a detail perspective of the patching last.

Similar numerals of reference are employed to designate corresponding parts throughout. I

In carrying out the invention, I arrange on one side and at the'upper end of a suitable standard what will subsequently be termed a supporting arm. substantially right angular jack standhas one end journaled .on a spindle extending through the said supporting arm. The connected arm of means between thejack stand Fig. 4 is a side elevation -the jack stand is normally parallel with the standard, while the opposite arm projects outwardly and at right angles to the standardand supports adjacent one end a last post. Thelatter is rotatably mounted on the jack stand and adjacent its point of connection with the latter is provided with ashaft or spindle. The latter is journaled in the last post and at one end is provided with a crank arm by means of which it may be turned. I Keyed to that portion of the shaft disposed'within the post is a ratchet wheel, the teeth of which are adapted to engage ing strap which extends over the sole of the last and down sides of the post in devices of this kind, has its terminals secured in a transverse seat formed in that portion of the shaft disposed within the post, so that when the shaft is turned, the strap will be tightened around the work and so held by bringing the pawl into engagement with the ratchet teeth. As before stated, the post is rotatably mounted on the stand, and the friction between the bearing surfaces of the two is increased or diminished by a suitable tensioning device.

' The standard 1 may be of wood or other suitable material and of convenient height and forms a support for the supporting arm.

metal and substantially right angular in shape having a relatively long side secured to one face of the standard 1 in such position that the shorter side 8 extends to and is secured to a short standard of less height than the standard 1. The long side terminates in a right angular offset 3 disposed a slight distance above the end of the long standard 1, whereby a space is formed on the end of the latter and the ofiset. The terminal of the latter projects a trifle beyond the vertical plane of the standard and terminates in a circular head 4 perpendicular to the side 3. The head 4 is provided on its outer face with a projecting stud 5 disposed at the highest point on the said head.

The jack stand in the present instance is shown to consist of a single piece of metal bent to the shape of a right angle provided with the arms 6 and 7 each of which is provided on its outer face with a longitudinal channel extending throughout the length of each arm, the sides ofthe channel being indicated by the numeral 7 The terminal of the side 2 of the supporting arm at a point communicating with the space formed by the upper end of the standard and offset 3. The

opposite end of the spindle extends through a vertically disposed elongated opening 9 formed in the circular head 4 beneath -the offset 3 and in alinement with the stud 5. Keyed to the outer end of the spindle projecting beyond' the circular head 4 is a toothed wheel 10. The latter is centrally provided with a recess or socket 11 extending inward from its edge, and of a size to receive the stud 5 of the circular head 1. Formed on the edge of the disk and on one side of the socket are ratchet teeth 12 extending substantially midway around the wheel; the opposite side of the disk is similarly provided with ratchet teeth13 similar to the teeth 12 but extending in the opposite direction. Thus it will be seen. when the jack stand is tilted upwardly and outwardly, as shown by dotted lines in. Fig. 1, the toothed wheel 10 will be moved from engagement with the stud 5. In this position the jack stand may be rotated to or from the operator, and when the position desired has been reached, it is moved inward against the face of the standard, as shown by full lines in Fig. 1. This downward or inward movement will bring one of the teeth on either side of the wheel 10 into engagement with the stud 5, whereby the stand will be held in adjusted position.

An oblong hollow last post 14 is disposed adjacent the outer end of the horizontal arm 7 of thejack stand. The last post may be of any well known shape, and at its upper end is provided with a suitable socket into which fits a tang -15 of an ordinary last 16. Journaled in the last post la and adjacent its lower end is a shaft 17, one end of which projects beyond the face of the last post and terminates in a crank handle 18. A work holding strap 19 is shown to embrace the last post and last in the usual manner, that is the intermediate portion of the strap is disposed on the sole of the last and the body of the strap extends downwardly and over the opposite sides of the post. Journaled in the opposite sides of the latter beneath the shaft 17 are a pair of rollers 20. The terminals of the strap are carried beneath these rollers into the last post and secured in a transverse slot 21 in the shaft 17. Thus it will be. Seen by turning the crank arm 18, the strap will be wound on the shaft 17 and made taut over the sole of the last 16. In order that the strap may be held in this tightened position and the shaft prevented from rotating in a direction to unwind the strap, the following mechanism is employed z-A. ratchet wheel 22 is keyed to the shaft within the post 14-, and pivoted to the inner face of the latter beneath the ratchet wheel is a dog 23. The latter is so positioned that its engaging end is normally out of engagement with the ratchet teeth. The outer end of the dog projects beyond the outer face of the last post and in position to be readily pressed downward by the finger of the operator. This downward movement of the outer end of the dog will bring the engaging end upward and into engagement with the ratchet teeth, whereby the shaft will be prevented from rotating in a direction to unwind the tightened strap 19.

The lower end of the last post 14: terminates in an enlarged circular base 24 which bears upon a similar formation on the outer end portion of the horizontal arm 7 of the jack stand. Projecting downward from the center of the base 241 is a pintle 25 which enters a suitable opening formed in the enlarged end of the horizontal arm 7. The lower end of the pintle extends for a con siderable distance into the groove of the horizontal arm 7, and is provided with a transverse opening 26 into which is fitted a cotter pin to prevent the last post from falling when adjusted to one of its angular positions, as before described.

From the foregoing it can be seen that the last post may be rotated on the horizontal arm 7 in a plane transverse the plane of movement of the jack stand. In order to prevent too free rotation of the last post, the following device is employed :Disposed within the groove of the horizontal arm 7 is a tension bar 27. This member is slightly bowed or curved and is provided adjacent one end with an opening to receive the pintle The opposite end of the tension bar 27 is provided with a similar opening through which extends the shank of a threaded bolt 28. The latter extends through an opening formed in the horizontal arm 7 and projects above the face of the latter. A suitable winged nut 29 is threaded on to the bolt 28. Thus it will. be seen when the head of the bolt is ti htened a ainst one face of the tensioning bar 27 the latter, owing to its bowed shape, will bear upon the cotter pin in the pintle 25, whereby the friction between the bearing surfaces of the horizontal arm and base 2st will be increased. hen desired a suitable standard 30 extending upward from the floor may be so placed that the enlarged end of the horizontal arm 7 may rest upon its upper end when the jack stand is in the position shown in Fig. 1.

By referring now to Fig. 5, it will be seen that I have provided a last having an attachment by means of which patches and the like may be applied to the upper of a shoe. The last 31 employed with this construction is considerably less in length than the ordinary type and is providedwith an outwardly pro ecting bar 352. v j

A lever 33 is shown having a portlon ad acent one end curved forwardly and up wardly and its other portion curved rear-- wardl-y and upwardly and. pivoted as at 34 upon the last 31. On the inner face of that side of the lever 34: adjacent the toe of the last is formed a serrated surface 85 and encircling this side of the lever is a bail 86 the ends of which enter the opposite ends of a transverse opening formed in the bar 32. Thus it will be seen by turning the link downward and out of engagement with the serrations, that portion of the lever overlying the surface of the last may be moved adj acent or away from the latter, and when it has been moved to the desired position, the link is turned upward to engage one of the serrations, whereby further upward movement of the lever is prevented.

As before stated, this construction is intended for use with a patching last. latter, as shown in Fig. 6 is of a size to snugly fit within the toe of the shoe, and is provided on its large end with an inwardly extending socket to receive that end of the lever overlying the last 31. The socket is of a size suf-, ficient to permit the patching last- 37 to be moved laterally relative to the lever, thus enabling it to be properlyacljusted beneath that portion of the shoe to be patched.

The operation of this construction can be readily understood when it is remembered that the shoe is fitted over the parts when in position, as shown in Fig. 5, thus enabling the operator to shift the patching last 37 to the desired position and tighten the same by means of the link 36, as before described.

From the foregoing it will be seen that I have provided a device which is simple in structure, comparatively inexpensive to manufacture, and in which the parts are so positioned that the operator may turn and adjust the device to the most desirable positions for operation. The fact that the jack stand rotates in a vertical plane will maintain the shoe to be operated upon, the same height above the floor, and the structure of the last post, whereby it may be turnedin a direction transverse the plane of movement of the jack stand, enables the operator to bring the shoe into any desired position without a similar change on his part.

What is claimed is 2-- 1. In a shoemakers jack, the combination with a standard; of a supporting arm carried thereby having on one end a head provided with a stud, a jack stand ournaled' on said supporting arm and provided with means cooperating with said stud to hold the jack stand'in any position on either side of the vertical.

2. In a shoemakers jack, the combination with a standard; of a supporting arm car- The i ried thereby provided with a head having on one end a stud, a jack stand journaled on said supporting arm having on one end a toothed wheel cooperating with said stud to hold said jack stand in any position on either s de of the vertical.

3. In a shoemakers ack, the combination -with standard; of a jack stand carried thereby, a last post rotatably mounted on said jack stand, and a bowed bar having one end connected with the last post and its opposite end with the jack stand and serving to increase and diminish the friction between the former and the latter.

- 4. In a device of the class described, the combination with a standard, of a supporting arm carried thereby and provided with a stud, a jack stand journaled upon the supporting arm for swinging adjustment with respect thereto and transversely thereof, a toothed wheel carried by the jack stand and engageable with the stud whereby to hold the stand in adjusted position with respect to the standard, the said stand being movable forwardly away from said standard whgreby to disengage the wheel from said stu 5. In a device of the class described, the combination with a standard, of a supporting arm carried thereby and provided with a stud, a ack stand mounted upon the supporting arm for lateral swinging adjustment with respect thereto, a toothed wheel carried by the standard and engageable with the said adjustment upon the spindle as an axis, a

toothed wheel carried by the spindle and engageable with the stud of the arm, the said jack stand being adapted to be swung forwardly away from said supporting arm whereby to disengage said toothed wheel from said stud.

7. In a device of the class described, the combination with a standard, of a supporting arm carried thereby provided with a stud, a spindle supporting the stand upon "the arm for lateral swinging adjustment with respect thereto, the said spindle proj ecting through a slot formed in a portion of the said arm, and a toothed wheel carried by the spindle and engageable with the stud, the spindle being adapted for oscillation upon forward swinging movement of the stand with respect to the arm whereby to disengage the toothed wheel from the stud.

8. In a device of the class described, a jack stand, a last post disposed upon the stand,

the said post being provided with a base base of the last post to bear against the up- 10 xhaving a depending stud engaging through per face of the stand.

the stand, a curved spring bar connected at In testimony that I claim the foregoing as one end with the stud and extending beneath my own, I have hereto afiixed my signature the stand, and means passing through the in the presence of two witnesses.

stand and through the other end of'the bar HIRAM F. MARSH. whereby the bar may be rocked upon the Witnesses: under side of the stand whereby to exert B. FRANK HULL,

downward pull upon the stud and cause the NORRIS E. MARSH.

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