US110184A - Polis - Google Patents

Description

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` JACOB WOO'DBURN, on ST. LOUIS, MISSOURI, AN'D SAMUEL r. Snrrmor INDIANA- POLISINDIANA, ASSIGNORS 'ro OseOOD SMITH a COMPANY, or INDIAN roms, INDIANA.

Letters Patent No. 110,184, dated December 13, 1870A iMPRovEMENT iN MAcHiNesr-'on BENolNe PLow-HANoLEs.

The Schedule referred to in these 'LettersPatent and vmal-:ing of the same.

To all vwhomit 'may concern v.' y

Be "it known that we, JACOB WOODBURN, of the eityand Ycounty of St. Louis and State of Missouri,

the relative construction of said device, anda seg mental rotating formergwhereby they may be-easily and quickly connected or disconnected, all as hereinafter set forth. n

' Figure 1, sheet l, is a side elevation of the machine.

Figure 2, sheet 2, is a top or plan view. i Figures 3 and 4, sheet 3, are detached detail views of the device for attaching the flexible strap to the former. y

Figures 5 and 6, sheet 3, are side and top views of the device for holding the bent wood in shape until dried vand set. p Similarletters of reference indicate corresponding parts of the severaljignres.

Agis the frame-work, to which all the other Aparts areattached; l

Bis the former, around which the wood 'is bent; v C is the flexible strap; and

D is the sliding beam or bed, with its end pressui'e andrlieving screw, E, in common use.. l AThe tlexiblestrap G is secured by its lrear end to the sliding bed, in `the usual manner; ,Y v In order to facilitate attaching the flexible strap C to. tbeformerB, and detaching it therefrom, so that the handles may be readily and conveniently int-roduced into and removed from the machine, we have- .constructed an iron T-head, F, so formed as to admit ofthe convenient insertion ot' the end piece t Of the handle-strap, and which is attached to thel flexible strap C by a hinge-joint, and is furnished with an eye Vto receive ra drift-key, G, by which the head is secured in the jaws H otL the formerB, aspsliown in figs. 1,-3, and 4.

. y This manner of attaching the Strap G to the former B, renders it less liable to be'brokeu than any of the methods new in use, as it is so constructed its-to prevent any short bend in the strap as it is .curved `around the former.

NVehave also made an improvement in the manner offapplying pressure to the back of the handles during the process of bending, by which it is more conveniently effected and greatly increased, and the backs of the handles prevented from shivering or splintering, and the handles pressed so Iirmly against the former B'as also to prevent the inside from becoming kinked or buckled.

j This improvement consists in the arrangement of the bed-plate I, upon which the slidingV bed I) rests as a lever, with its fulcrum at a', the connecting bars J, rocklshaft K, furnished' with a short lever, P, and lever L, the rear end of which extends back to .a convenient position'f'or the operator to handle.

The arrangement of this colnpound system of' leverage, combined 'with the sliding beam D and the former B, is such as to admit of all the -movement that is necessary, and multiplies the power applied to a very great amount, and is snicient to force the bers of the wood to conform to the former B;

The device for engaging and disengaging the worm M on the shaft of the driving pulley, with the worm X, on the same shaft, with the former B, consists simply in hinging the upper part ot' the frame A, on which the worm-shaft is hung, to the principal frame,

'as shown, and arranging the lever N'iu Convenient position to be actuated by the operator, by which the upper hinged part of the frame can be raised or lowered at pleasure.

Power to drive .the machine is applied to pulley WV, giving the worm M constant rotation, and the device here shown is designed to make it more convenient to aotuate the former and bring it more completely under the control of the operator than heretofore.

In order to hold the. former firmly, and prevent its turning back when the worm is disengaged from the worm-wheel, and thus retain the bend given to the handles until the harness is attached that holds them in shape aftery removal from the machine, a ratchetwheel, O, is lined upon the same shaft with the formeraud worm-wheel, and is held by the pawl Q.

This pawl is held down upon the ratohet-wheel O bia SJiral s rin T not seen in the drawings and is` l p o o 7 sire'd or given them by the machine and render them less liable to be .disarranged in handling, we have de vised the improved Stra-p and harness shown more clearly in igs. ,5 and 6.

rlhis strap consists of a strap, c, of sufiicient length to extend around the curve, and breadth to extend across any number of handles that it is desired to bend.

The front end of this strap isfurnished with' a substantial end piece, i, which is securely attached to it, 'and which is furnished with hooks,` S.

A narrow strap connects the rear end bf the broad strap ewith a heel piece, r, which is also furnished with a hook S.

The harness is made of iron rods T, and are f urnished with loops at their ends, by whichy they are attached to the hooks S, as shown, and are strained up to hold the bend in the handles by the strainingpiece or props V.-

lhe former B is notched to receive the end `piece 'i of the handle-strap between it and the T-head F, as shown.

The operation of the machine is as follows:

The handle-strap eis laid upon the main strap Cb and sliding beam D; the head F of the main strap is vthen fastened to the former B by the insertion of the lkey G through the mortises in the jaws Hbf the former and eye of' the iron head ofthe main strap; the handles, having been rst turned in a lathe to the proper shape and steamed, are laid upon the strap 'and pushed up to the solid iron end 'i by the end pressnre and relieving screw E, so as to give them suficient upset; the compound lever is then applied,

bringing both the straps and handles up to the form and pressing the handles with very great force into the grooves prepared for them in the former;'the lever N isthen raised and the forni begins to rotate. The main stra-p, while being wrapped around the handles and the form, draws the sliding bar D, along as the handles bend. The elongation of the timber and relief-from upset while bending, is .given by slowly` and-continuously turning back the, relieving screw E.

The combination of the back pressure, with constantly relieving the end pressure, bends the handles perfectly.

At the proper point the break is put down and the pawl catches therachet-wheel and holds everything to its place. The harness rods are then hooked ou to the lugs at each end of the strap and a wooden brace 0r stretcher put under it, taking up all the slack of the fastening and holding the handles tight. upon the strap, so that not a fraction of the bend is lost. The

i pawl is then raised from the IIatchet-whee'l, the handles drop from the form, the key is taken out, and the handles are carried away and left to dry ou the strap until the timber is snicicntly set and hardened..

that it will retain its proper shape.

Having thus fully described our invention, Vhat we claim as new, and desire to secure by Letters Patent, is-

1.y The handle-strap,-composed of the parts e lr i s, harness rod .l, and straining block V, all constructed and arranged as shown and described, and for` 'the purpose set forth. l

2'. The handle-strap e r i s,in combination with T-head F, strap c, the former 15, and key G, all constructed, combined, and arranged as shown and described, for the purpose specitied.A

JACOB WOODBURN. W'itnesses: SAML. F. SHITH.

WM. H. WEEKS, 0. F. MAYHEW.

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