US80815A - bkholm - Google Patents

Description

anni @frn Lettera PatentnNo. 80,815, dateoZj-August '11, 1868..l

`IlltillltOVEMENT IN M0TIVE-lOVi/liit FORSEWINGMAGHINES] itttigthtle winter trim tlgentdtrts tant ma mating ,wat nf tige stun;

TO V.ALL WHOMIT MAY CONGERNz- Be it known thatL. H. ENIIOLM, of St. Louis, county of St. Louis, and State'of Missouri, have invented certain-new and useful ,Improvements in Motive-Power for Sewing-Machines; andl do hereby declare that the following is a full,.cle ar, and exact description-of the'same, reference being had `to the accompanying drawing, and the `letters ofrefereuee marked thereon, making partof this specification, in wheh- 'v .Figurel is a side view, showing the 4spur and pinion-wheels and ratchet-devices for winding' the springsl- Figure 2.is' an endview,'showing the arrangement of the wheels, spring-boxes, and fan-regulating sleeve.

Figure 3 is a' top view looking into 'the box,showing the longitudinal position of the spring-boxes, ratchets, and wheels. v

Figure 4 'is a separate drawing ofthe lever for regulating motion oi'ian. Y l IFigure 5.'is a separate drawing of the sleeve, audits leversoperating the same, from the motion of the lever in fig-14,

My inventionlprovides sewing and other like-machines with a motive-power that is simple and practical in "construction, compactA in form, one that will prove durablel in use, and that can be manufactured 'atan exceed.

ingly moderate cost. Y l

` Itis air-admitted fact by'all'who are familiar with this. class of-'inventons, thata. machine, to .meet the demands of the market, mustlpossess Ythe foregoing prerequisites, and also that its mechanism must be of that character, and arranged in lsuch a manner as to insure uniformity of speed in its operation; and also th'atvthe machine 'must be provided with the means .whereby the rate of speed. can be regulated, so that it can 4readily-be lincreased or diminishe d,r as .occasion may require, in; orderthat the power may b'e applicable to all styles of machine, and all kinds of work. y

' To uccornplishthis, and meet the public demand, is theobject of my presentinvention, Vand the nature of ithe'sanre is asfollows Ina suitable lhoz; `or case-Aarrange a. system of cog-gearing, so connected with -the mechanismby which the power is prodnced,'and" t`he liy-wheel and its dri'vinglshaft, that the power receiv'e'd'from the `former is transmittedv in an accelerated formto -tho latter, and't'hence to the sewing-machine# The motive-.power consists of two coil-springs, which are arranged insuita'ble drums, which-are attached to` themain shaftof'the u xachinep4 l 'One 4of themostiuportant features of my invention is found iu the means by which these springs :are wound oroperated. The drums are provided with a series of teeth, which are arranged around the' edge `of their periphery. A small pinion-wheelis-so'placed as to mesh with'these teeth. On the face of these drums are placed two cogiwheels, one: of which engages with a larger cog-wheel attached to abend-lever, andfthe' other.

with an'lintormediate pinion-wheel, so arranged as to also engage with the lever-wheel.

.The advantage of .this arrangement is this: It matters not .in which direction the handle'is moved, both drums are 4caused to malte a revolution, and one or the other of thesprings .is wound once, thus giving the springs'an intermittent motion, cach spring`beingheld', as fast as woundup,by means of a ratchet and spring-I pawl attached to the sha-ft around which theV spring works.

' Anothermost' important feature o f my invention is found in the method whereby I am enabledto regulate the speed ofthe maohine, incr easing or diminishing the same at pleasure.

0n an ordinary shaft, Vprovidedwth a pinion-wheel, which engageswith a lsuitalile driving-wheel,l works a.

sleeve, to which are attached two or more blades or wings ot'fa fan. In agroove on the end of this sleeve rests the end of a lever-arm, whose position is controlled bymeans o f a short. screw-arm ndrhcad. Each' of' the vwings 0r blades is providedwith aniangular flange-plate, .to one end of which isV attached a wire rod, which has'its other attachment in the sleeve;` Simply by shifting the lever, you change theposition of thesleeve and reverse.

that of the blades, by means of which, it will he seen, the rate ofspeed can instantly be changed.

Instead ofthe systemoi` springs for providing the4 motive-power, thewell-knowu mechanical equivalent of the same, the cord and weight, could readilybe applied to the drums, and would operatewith like eiiect.

To enable others. skilled in the art to make and use my invention, I will now proceed to describe its conn struction and operation. l l

A represents the frame oflthe `box or case, which contains the entire operatingi-mechanism., This box or' case A is constructed with a removable bottom and sliding sides,in order to facilitate access to the mechanism, should occasion require. It is made oi' metal, and is oblonfv in form, and cast with large semicircular bearingplates, a a', on its sides. l

B is a shaft,` to which is attached the ily-wheel, B. AThis shaft has one of' its bearings in a boss, b, which is attached to the sid'e a. Its other bearing is an upright arm, b', which is formed with an elbow, and is attached to the side ofthe frame. On the other end of this shaftB is attached a pinion-wheel, c, which engages with a l large gear-wheel, C, by which it is operated` and through which motion is imparted to the shaft B and fly-wheel B. This wheel C also engages with the pinion-wheel d on the shaft d, and operates the same. This shaft d has its bearings in the side a and in an upright plate, D, which is formed with an elbow, by means of which it is secured to the side, a', ofthe frame. Onthis shaft d worksv the sleeve E. This sleeve is provided with slots, e e, by means of which its position is allowed to be changed. i l

There passes through each of these` slotse e, and is attached directly to the shaft cl, the bearing-arm ofthe i blade or wing F of the fan. These blades or wings 'F F are provided with small angular lange-plates,f f, to

which are secured a bent-wire rod,f, its other end being attached directly 'to the sleeve E'. et is a groove in the sleeve E, inwhich rests the end of the bent circular lever-arm G, b-y means of`whichthe sleeve and fan,

and their connecting-devices, are. all operated. The other end of this vlever-armGr is provided with a screwthread, y, andprojects througha slet in the end a of the frame. 'On this screw-thread is secured'a thumbhead, f g. l The gear-wheel C is securedto the shaft It, to which are also attached a spur-wheel, H, and "two piniornwheels, h1 and h2. Theshaft h has its bearingiu the'side ai of the frame.V The spurlwheelH engages with a pinion-wheel, z', and the pinion-wheel [il with a gear-wheel, I, both attached to the main shaft KKK are the Y main shafts,` and have their bearings in the sides aand a of the frame. To these shafts are attached the drums' L L', that contain the coil-springs. One end of these springs is attached to the shaft K, and the other to the drum. Z l are a series of teeth cast around the edge of the periphery of the drums L L. These teeth engage with the pinion-wheel h on the shafth.' M M are two gear-wheels, which are placed on the outer face of the drums L L. The wheelM engages with the main spur-wheel N, and the wheel M with the intermediate pinionwheel fn., which also gears with the spur-wheel N. O O and 'o o are ratchet-wheels and spring-Pawle, by which the springs are held as fast as wound up. P is a, hand-lever, which is rmly secured to a shaft, p, as is also the wheel N. The shaftp has its bearing i-n the side, a", of the frame, and in the upright plate D.

The operation is as. follows: I l l y The lever-arm P,'which passes througha slot in. the top of the frame, is worked backward-and forward, at cach movement revolving both of the drums, and also at each movement making a complete wind Vof `one or the other Soi' the springs. It willbe observed that the `diameter ofthe wheels M and M', and :also of` th'eint'ermejv diate pinion-wheeln, being-only halt` of that of the wheel N, and the latter being provided with twice the number of teeth," that while it is allowed t'o V travel only in a'semicircle, and consequently a half revolution', it insuresa complete revolution'lot` thesprings and drums on the main shaft at each movement. As fast as the drums are wound, they andthe main'shafts K and K are held by the ratchet and pawls k c, while the' springs are held bythe ratchets and pawls O O. and o o. As' soon :rs-fully wound, the machine is started,'and through the system of gearing hereinbefore fully described, motion is at last imparted to the wheel C, and is byit transmitted tothe pinion-wheelvc, and te the shaft B and .ily-wheel B. Motion is then communicated to the sewingmachine by connecting the shaftlB therewith, or by means of a driving-wheel and belt, or a `pitman connection. supposing the machine to bein operation, and at the highest rateof speed, the blades o1' wings-FF ofthe fan are then parallel with the sidesof the frame. y i 4 l l New itis desirable, for some ireason, -to diminish vthe rate of speed. This can readily be accomplished, simply by moving the'bent circular lever-arm G, which operates the sleeve E, which will lthrow the blades or wings F Fin a diagonal position, or reverse vthem entirely. When' the blades are reversed entirely, the speed of the machine is sconso slackenecl that simply by placing the hand upon the fly-wheel the machine can instantly be stopped.

i The systemof gearing and ratchet-pawls is such asto permit the ily-wheel to be 4turned in a reverse position, should occasion require, to replace a needle, or'for other purposes.

Having thus fully described my invention, what I claim. therein as new, and desire to secure by- Letters lPatent of the United States, isv l 1. The drums and springs, when the same are operatedby the lever and intermediate pinion-wheel, substantially as described, as and for the purpose specified; I

2. The drums L L', with their springs3 when the same communicate their power to the main driving-shaft of the machine, through a system of'intermediate gearing, and thc whole is so combined and arranged as to operate substantially a's described, as and for the purpose speciied.

3. Regulating the speed of'the machine by means of the sleeve E, lever G, and fau-blades F F, whenl the Same areconstructed and arranged so as to operate substantially as described. v i

` In testimonywhereof, I have signed my-name to this speciiication in thepresence of two subscribing witnesses.

A. H. ENHQLM.

I Witnesses :l

J. MeKENNnY, H. C. McKENNEY.

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