US1414055A - Shoemaker's jack - Google Patents

Description

sHoEMA'KERs JACK.

APPLICATION FILED APR. 24, 1920.

1,414,055. l Patented Apr.-25, v1922.

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G. O. TERRY.

s HoEMAKERs JACK.

APPITICATION FILED APR. 24| |920.

1,414,055, l Patented Apr.25,192z

I 2 SHEETSSHEET 2. H715 7' y @y l G'EIOEGE o. TERRY, OE MINNEAPOLIsVMIANNEsOTA, AssieNoE To ECONOMY SHOE i Meer-MNE oo., or MINNEAPOLIS, MINNESOTA, ,A OOREOEATION OE MINNESOTA.

sHOEMAKEEs JACK. f

VTo all whom t may concern.'- f

Y Be it known that GEORGE O. TERRY, citizen of` the United States, residing-at Minneapolis, in the count-y ot Hennepin and Statefot' Minnesota,have invented certain new fand .useful Improvements in Shoemakers Jacks; andV I do hereby declarethe following to be a full, clear, and? exact de'- scription of the invention, such as will enable others skilled inthe -arttowhich it appertains to make Iand use the same. Y

v My present inventionv has for its objec to provide a highlyecient shoemakers jack toruse in holding shoes while heels, and trimming. i Y

To the above end, the invention consists of the novel devicesand combinations of' devicesyhereinater described and defined in the claims.v y

In the accompanying drawings, 'which' illust-'rate the invention, like characters indicate like parts throughout the severalfviews.

Referring to the drawings Fig. 1 is a view in sideielevation with some parts broken away and sectioned, and also illustrating, by means of broken lines, a shoe i; l held ou the last of the jack;v

' Fig.y r2 is a horizontal sect-iontaken ont-he line 2 2 of Figl; f i. F 1g. 3 1s a `detail' view infsection takenr on in a different posit-ion; and

Fig. 6 is a view partly in elevation andA partly in vertical section taken on the line 6 6 of Fig. 1.

The improved jack Vincludes a tubular standard made up of a lower section 7 and an upper section 8, the former of which is rigidly secured to a floor or other support" by lag screws 9. Theabutting ends of the standard sections 7 and 8 are contracted to afford bearings 10 and 11, respectively, and

l which bearings have at'their `opp'ositeextremities annular shoulders 12 and 13, spectively. l Y

The standard sections .7 'and 8 are conynected by a laterally offset hinge 14 arranged to open on the horizontal pivot of a fric- Y tion joint. This hinge 14 is connectedto the klower standard section 7 for horizontal swinging movement and said upper standard V.nailing soles,

specieatic'nof rette'rsrareiit. f Pat-@Hwa Apr. 25, 1922 i p applicati@ filed Aprilia,ieee.;v serial"Nqfsveesr Y sectie-11B is lmounted, therein withv freedom;-

to be turned on itslongitudinalaxis.Vv Said l`hinge'14 comprises upper and lower over.-

lapped members yl5 and 1,6, respectively, and a horizontal nut-equipped pivot bolt '17, vwhich extends through aligned bores in said members.` A coil-spring 18,v encircling the bolt 1 7, 'is'fcompressed between the lower 'hinge ,member 16 anda washer 19 Onsaid--v boltv at the nut-equipped.endthereof,andA

frictionally draws the members ot the. hinge V14 together. Formed'with the hinge'mem'-,

bers 15 and 16 are transversely dividedjhubs 2O and 21, respectively, andL which hubsare turnabl'y.mounted on the bearings 11` and 10, respectively.r These hubs 2O and 21 have lofset ears 22, which extend vsubstantially i parallel v,to the members 15 andl of thel hinge 14 and are laterally-'spaced therefrom. v

Thumb-nut-equippedl draw-lblts 23 extend through aligned bores in the ears 22 and .hinge/ members 15 and 16 and are provided to frictionally .clamp t-he'hubs 20 and 21 on ythe bearings 11 .and 10, respectively, and' thereby" lock the hinge'144 against turning movement on thelower standard section 7 'f and the upper standard section 8 against turning' movement on the hinge 14.. Y

flast 2411s removably and `reversibly mounted on, the upper end off'the upper standard section 8 by `forming on said sec-v tionl atenon25 arrangedfto lit. within amortiseiy26 in 'saidlast For holding a shoe firmly on thelast 24, Iprovide a buckleequipped strap 27 adapted to lbe extended over the'shoe-close to the heel thereof. The sections of the strap 2 7 are secured byrivetsl to the intermediate portions of a pair off) vconverging prongs on a bifurcated lever 28, w

which loosely embrace the upper standard section 8. The prongs loit the lever 28 are pivoted at 29 to a radially projecting lug; 3() ,i

integrally formed with said standard seci tion 8, and which pivot 29 lateral movement of said lever.

To hold the lever 28 with the strap 27 tightly drawn downward over the shoe Z, there is secured to one of the prongs of said leverra lock dog 31 arranged toro0- operati'on with a plurality of ratchet teeth 32-seoured to a vertical web 33 integrally formed Vwith the standard section 8 diametrically opposite the lug 30. The ratchetv teeth 32 are arranged tofper'mit the dog 31` to slide thereover underv a downward movepermits a limited i .i

es" f i ment ot the lever 28 to tighten the strap 2T and lock the same against upward movement to release said strap. j

A spring-pressed plunger 34 is mounted in one of the prongs ot' the lever 28 and yieldingly engages the opposite side of the web 33 from the ratchet teeth 82 to yieldingly hold the lever 28 in a position with the loclr dog v3l in engagementV with the ratchet teeth 32. lf the movement of the lever 28 in drawing the strap 27 over the shoe Z is too great for the number of ratchet teeth 32, saidjstrap may be shortened by means of the buckle interposed therein. The yielding engagement/ot the lock dog 31 with the ratchet teeth 32 will automatically hold theclever V28 at the limit of' its downward movement,`and to release said lever, it is onry'necessary to move the samev laterally against the action ot the spring-pressed plunger84`to disengage the lock dog 31 from the ratchet teeth 32 and permit said'lever Ato be raised.

Y bifurcating the lever 28 so as to embrace 'the upper standard section 8 andat taching the ends of the strap 27 to the prongs of said lever, it is possible to secure a direct downward pull on said strap over the shoe, which is desirable in securing said shoe firmly on Ythe last.

By loosening 'the lower draw-bolt 23, the hinge 14 may be turned von the bearing 10 and set in any desired position, or by loosening the Vupper draw-bolt 23, the upper standard section 8 may be turned lon its lon gitudinal axis to position the last 24 to suit the operator- Thespring 18, acting on the hinge bolt 17 and the lower hinge mem ber 16, trietionally clamps the upper hinge memberl on said lower hinge member 16 with a force sufticient to yieldingly hold the upper standard section in an upright position Aor in variousiditferent oblique positions in respect tothe vertical. By the use of the friction joint in the hinge 14, an operator may very quickly and easily set the upper standard ,section 8 in any desired position and'then turn said upper standard section on its longitudinal axis while working on a shoe, for instance, in trimming the rough outline of a sole to va Welt. By adjusting a nut on the hinge bolt 17, ried, at will.

That l claim is:

1. A shoemalers jack having in com-v bination a lower standard comprising a bottom attaching flange and a post upstanding therefrom having a shouldered journal at its top, an upper'standard adapted to Support a last and having a shouldered journal at its lower end, and a connection for said standards comprising superimposed split clamping sleeves, the upper one receiving the journal of the upper standard and supporting said standard and the lower one fitting over the journal of the lower standard and supported thereby, said sleeves having laterally extending arms connected by a hinge friction' joint, the diameters of said sleeves and the adjacent ends of the standards being substantially the same.

2. ln a shoemalrers jack, the combination with a standard having a last, of a bifurcated lever embracing the standard and pivc oted thereto with freedom for a limited latesoneri oRvILL TERRY.

the rtension ot the spring 18 may be vaj

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