US1151021A - Shoemaker's jack. - Google Patents

Description

G. L 0. LAPRTE.

SHOEMAKERS JACK.

APPLICATION HLED MAYa.1912.

1,151,021. Patented Aug. 24,1915.

rien.

GASPARD LAPORTEE AND OCTAVE LAPORTE, :1? GENTERVILLE, RHODE ISLAND.

snoniinxnns JACK.

Spec'cation of Letters Patent.

Patented Aue. 2a, 1915.

Application filed May 3, 1912. Serial No. 694,996.

T 0 all whom t may concern:

Be it lrnown that we, GASPARD LAroRrn and Oo'rnvn Lnronrn, subjects of the King of England, and residents of the United States of America, residing at Centerville, in the county of Kent and State of Rhode Island, hav-e invented certain new and useful Improvements in Shoemakers Jacks, of which the following is a specification.

This invention relates to a shoe makers jack and has for its object to provide a work carrying arm connected by a universal joint to a standard whereby said arm may be moved and secured in any desired position to facilitate operation on the work and that without loosening or unfastening the work. And a further object is to provide a base in which said standard is mounted and also to provide readily adjustable means in said base for -releasably securing said standard therein. And a still further obj ect is to provide an adjustable rest on said standard for supporting said arm in substantially a horizontal position.

With these and other objects in view, the invention consists 'of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims. f

Of the accompanying drawings: Figure l-is a side elevation of our Aimproved device, partly in section, also `showing another position of the wor-lr carrying arm in dotted lines. Fig. 2-is an enlarged view illustrating the means for tightening the strap over the work to bind it to the last. Fig. 3-is a plan view of the'ball joint illustrating the relative positions of the retaining fingers whereby the work supporting arm is` permitted to be lcarried down in any direction to or even below a horizontal position. Fig. a-is a plan view of the basev showing the spring operated cam lever which causes the standard to be gripped and retained therein. Fig. 5-is a side elevation of the base in which the standard may be placed when the operator desires to stand up to his work.

Referring to the drawing 1 designates the base which may be made in any desired or convenient shape or form, that shown in Figs. 1 and 4 being low to permit the operator to sit to his work, and comprising an extended rim portion 2 rectangular in shape forming a hollow center across which extends a pair of bars 3 loosely held at one end et in the eye member 5 and the opposite endl() being loosely held in the eye member 3, the center portion being enlarged as at 7 and provided with an opening. at 8 into which the lower end 9 of the standard presently described is adapted to fit and be retained. These lends 10, see Figs. land 4, are adapted to be pressedy or forced together by means of the cam lever 11 by the pulling action of the spring 1i, -said earn being pivoted at 12 and provided with an outwardly extending arm 13 which is designed to be pressed downward by the foot of the operator when it is desired t0 release the bars to permit the standard to be turned in the socket formed between said arms.

The working carrying arm 15 is provided at its upper end with an outwardly extending tongue 16 which is set on an angle turned slightly backward toward the heel of the last, as shown in Fig. 1. rlhe lasts 17, of which there is the `usual set, are provided with corresponding apertures for receiving Y saidA tongue whereby the angle of the tongue engaging these lasts hold them absolutely tight and rigid against any pressure which may be brought on the toe portion of the same.

The shoe or worl a is shownin section on the last. In order to bind and secure this worltto the last we have provided a strap 18 which passes over the same, the opposite ends of the strap being adapted to be wound. simultaneously on the shafts 19 and 20, see Figs. l and 2, whichl shafts extend transversely through the opening 26 formed in t-he lower portion of the arm 15 and are adapted to be rotated through the hand wheel 21, shaft 22, and gear 23 which latter meshes into the pinions 24 located on said shafts l9'and 2O respectively. rllhese gears and shafts are all adapted to be locked against a reverse rotation by means of the pawl 25 which engages the teeth of gear 23` until such time as the pawl ris withdrawn.

The lower end of this Aarm is provided with a large ball 27 which sets in the socket formed by -t'he plurality of fingers 28 on the upper end lof the standard 29. One of these fingers 30 is formed free and independent of the standard and is secured lthereto by means of the bolt 31 which passes through the standard and through the lower portion 32 of said finger. rlhe outer end of this bolt is provided with an eye portion into which the cam 34 is mounted, said cam being provided with a handle 35 whereby it may be actuated by hand to cause said finger to bind the ball and retain the arm 15 in any desired position. -A nut 36 is provided on the opposite end of the bolt 31 whereby the binding eect of the cam may be adjusted.

A. rest 37 is secured at its lower end 38 by means of the set screw 39 to the standard 29 while its opposite end 40 is made in the form of a yoke or fork so that the work carrying arm 15 may be turned down and rest therein when desired.

l/Vhen the operator desires to sitdown to his work the low base 1 is employed but when he desires to stand up to his work theV higher base L11 may be employed, in which latter case the lower portion 9 of the standard 29 may be inserted in the bearing 42 of this high base and releasably held and bound therein by suitable means such as that illustrated in Fig. 4; attached to the base 1 whereT by it may be readily released to be rotated in said bearing when desired.

In operating our improved jack the last is positioned on the tongue 16 and the work is positioned on the last. rlhe strap 18 is passed over the work and then by turning the handle 21 both ends of this strap 18 are wound simultaneously on the shafts 19 and 2O and firmly held-in tightened position by means of the locking pawl 25, see Fig. 2.

In trimming the edges of the tap after it has been applied to the sole of the shoe, the Shoemaker lpresses downward the handle 35 thereby releasing the ball 28 in the joint permitting the arm 15 with the work to be drawn over and rest upon his knee or upon the rest member' 37 in which position he can rotate this arm on its axis so as to readily get at the edge of the shoe all around the tap.

Another feature of the invention is that the means for holding this ball comprises long fingers by which construction the arm is permitted to be moved downward between saidy ngers to any desired angle and if one of these fingers should happen to be in the exact position where it is desired to lower the arm, then it would be only necessary to press the foot on the lever 13, release the standard and rotatesaid standard to carry the interfering linger out of the way to permit the lowering of the arm into exactly n the position desired.

The device is inexpensive in construction and very practical in its operation and by its use the operator may either sit or stand at his work, as desired, and by the use of the universal joint kthe work may be swung into any desired position and rotated to Afacilitate operating thereon.

Ve claim 1. A shoemakers jack comprising a standard, an arm connected at one end with said standard and provided with last engagingV means at the other end, said arm being provided with an opening between its ends, means for retaining said arm at any desired angle with respect to said standard, a Hexible binding strap passed around the free end of said arm and having its ends in said opening, and means in said opening and extending longitudinally of the last for simultaneously moving both ends of the strap to adjust the tension on'the latter.

2. A shoemakers jackcomprising a standard, an arm connected at one end with said standard and provided with last engaging means at the other end, said yarm being provided with an opening between its ends, means for retaining said arm at any desired angle with respect to said standard, a flexible binding strap passed around the free end of said arm and having its ends in said opening, parallel winding drums extending longitudinally of the last located in said opening and connected with the respective endsof the said strap, and means for simultaneously actuating said drums. v

3. A shoemakers jack comprising a st andard, a single arm having one end connected to said standard and provided at its other end with last engaging-means, asupporting base, clamp bars extending across said base and embracing the lower end of said standard, a spring for maintaining a clamping pressure on said bars, and a cam lever for releasing said pressure.

4. A shoemakers jack comprising a standard, a single arm having one kend connected to said standard and provided atits other end with last engaging means, a supporting GASPARD LAPORTE. OCTAVE LAPORTE. l

Witnesses:

HOWARD E. BARLow, E. I.y OGDEN.

Copies of this patent may be obtained for vc cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Images