US225115A - Drop-box mechanism for looms - Google Patents

Description

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J; DoBR1`1\IG.'A Drop-B01; Mechanism for Looms. No., 225,115. Patented Mar. .,2, T880@ N- PETERS, PHON-LITHOGRAPHER. WASHINGTON D, t:4

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J. DOERING. l Drop-Box Meohanismfor Looms? No. 225]?5. Patented Mar. 2, 80.

M F'ETERS, FHOTOJJTHOGRAPHER. WASHINGTON, 1K2,

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UNITED STATES PATENT OFFICE.

JUSTUS DOERING, OF PHILADELPHIA, PENNSYLVANIA.

DROP-BOX MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 225,115, dated March 2, 1880.

Application filed December 8, 1879.

To all whom it may concern:

Be it known that I, JUs'rUs DoERING, of Philadelphia, Pennsylvania, have invented a new and usef'ul Improvement in Drop-BoX-Operating Mechanisms for Looms, of which the following is a specification.

The object of my invention is to constructa compact and smoothly-working device whereby the drop-boxes of a loom can be rapidly and accurately adjusted and held in position after adjustment.

The invention consists of the combination l of a slide carrying a block connected to the drop-boxes and having certain spring-fingers with a series of studs and devices for operating the same, whereby the vertical reciprocation ofthe block and drop-boxes is effected on the longitudinal reciprocation of the slide..

The invention further consists of the combination of the slide having a swinging bar with a crank-pin, a sliding` strip, and devices for operating the said pin and strip, whereby the reciprocation of the slide at the properintervals only is effected.

The invention further consists of the combination of the studs for acting in conjunc tion with the fingers of the block with certain plates, pins, shafts, and arms, whereby the retraction of one stud is assured on the advancement of another, all as hereinafter fully set forth. Y

In the accompanying drawings, Figure l, Sheet 1, is an end view of part of a loom, showin gthe application of my improved drop-boxoperating device thereto; Fig. 2, 'a front view of part of Fig. l, Fig. 3, Sheet 2, a longitudinal section on the line l 2, Fig. 2, drawn to an enlarged scale; Fig. 4, a transverse section of Fig.,3 on the line 3, 4; Fig. 5, Sheet 3, a sectional plan on the line 5 6, Fig. 8; Fig. 6, a plan view of part of Fig. 3; Fig. 7, a section on the line 7 S, Fig. 5; and Figs. 8, 9, and l0, reduced sections of Fig. 7 on the lines 9 10, l1 12, and 13 14, respectively.

A is a frame bolted or otherwise secured to the foundation of the loom, and constructed for the guidance of a slide, B, the reciprocation of which at the proper times is effected by means of a crank-pin, a, on a pinion, b, carried by the said frame A, the pin acting on one end of the slide B and on a'bar, d, which is hung to the said slide by means of hinged plates c, and is acted upon by a spring, c. The slide B is only reciprocated when it is necessary to raise or lower the dropAboXes, the bar l at other times being thrown out of the path of the crank-pin a by the inclined end of a strip, e, adapted to guides on the top of the frame A, the strip being' held in the position shown in Fig. 6 by a latch, c', hung to the strip and adapted to a recess in the frame A. The latch c is, however, provided with acord, e2, one end of which is connected to a pin on the strip c, the other end passing through an eye on the frame A, so that on pulling said cord the first effect will be to elevate the latch c', and then to draw the strip c in the direction of the arrow, Fig. 6, and thereby permit the bar d, under t-he influence of the springe', to move into the path of the crank-pin ft. i

The pinion b and its crank-pin a. turn in the direction of the arrow, Fig. 3, one revolution of the crank-pin being sufcient to impart a forward and backward movement to the slide B, the pin entering the slot between the bar d and the end of theslide, and acting first on the said bar d, so as to move the slide forward in the direction of the arrow, and then on the end d of said slide, so as to restore it to its original position.

On the forward movement of the slide B a plate, h, on the latter acts on a pin, It', on the strip c, so as to restore said strip to the posi- `tion shown in Fig. 6, and thereby throw the bar d out of the path of the crank-pin a, until the strip is again operated.

In order to effect the reciprocation of the slide B with the proper rapidity, the pinion b is driven by a larger pinion, j', and the latter by a pinion on the driving-shaft of the loom, (see Fig. 1,) the pinion b preferably making two revolutions to each revolution of the driv.

lng-shaft. In order, however, to prevent the operation of the slide B when the other parts of the loom are not in the proper positions, the pinion j' is furnished with a cam, f', which acts on the enlarged head f2 of the bar d, and throws the said bar out of the path of the crank-pin et until the proper time for the changing of the drop-boxes.

The movement of the strip c might be so timed that the cam f on the pinion f could Ybe dispensed with; but it is preferable to connect the cord c2, which operates the strip c, to

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one of the needles ofthe Jacquard apparatus, as shown in Fig. l, for instance, and iii this case the needle is retracted simultaneously with the opening of the shed, so that in the absence of the cam f the slide B might be operated and the boxes changed while the shuttle was being thrown.

The means whereby the longitudinal reciprocation o1 the slide B is caused to eect the vertical movement of tlicdrop-boxes are shown in Figs. 1, 2, 3, and 4, and are as follows: To..

suitable guides in the slide B is adapted a block, D, the upper end of which is connected by a link, E, to one arm of a lever, E', hung to the frame ofthe loom, the other arm of said lever being connected by a rod, F, to an arm, F', from which is hung, by means of rods G, (only one of which is showin) the frame J, carrying the drop-boxes, said frame being adapted to suitable guides on the swinging lay M. In one side of the block D is formed a recess, t', the sides of which are partly parallel and partly flaring, so as to impart to the recess the Y shape shown in Fig. 3. In the flaring` portion of this recess are arranged a series of pivoted ngers, the number of which will depend upon the number of drop boxes employedin the loom. The device shown in the drawings is adapted for operating three boxes, and there are four fingers, m, m', m2, and m3.

"When the parts are in the position shown in Fig. 3 the adjacent faces of the iingers m m form continuations of the parallel sides of the recess i7, and the linger m2 occupies an inclined position midway, or thereabout, between the iinger m and the iipperinclined side ofthe recess i, the end of the linger m bearing against the end of the finger m2, and the latter bearof said fingers to yield under the circumstances described hereinafter.

At one side of the frame A is a casing, N, the opposite sides of which are slotted, so as to form guides for a series of plates, P, three of which are shown in the present instance, one for each drop-box. The front ends of these plates are provided with studs s, which, in connection with the fingers m m', Src., effect the vertical reciprocation of the block D and the drop-boxes on the longitudinal reciprocation of the slide B, as follows: When the parts are in the position shown in Fig. {fi-that is to say, with the slide D lowered to its full extent and the stud s of the lowerinost plate P occupying a lposition between the fingers 'm m/ the partial elevation of the block D may be effected by retracting the lower plate P and its stud and advancing the middle plate, P',

so that its stud s shall occupy a position in the opening n between the fingers m and m2. On the forward movement of the slide B the said stud will act on the inclined face of the finger m2 and effect the raising of the block D and the operation of the drop-box frame, the finger m yielding in order to allow the stud s to pass into the parallel portion of the recess t, and then resuming itsrformer position, so that on the backward movement ot' the slide B the stud will occupy a position between the fingers m and m', and the block D and dropboxes will be firmly locked in position.

The block D may be elevated to the full extent by moving the stud of the uppermost plate P into the opening between the iinger m2 and the upper inclined edge of the recess z' or the block D, when elevated, may be depressed to the extent of one box by withdrawing tlie uppermost plateP and advancing the middle plate so that its stud s will occupy a position between the fingers m and m3, the full depression of the block being effected by the cooperation of the stud s ofthe lowerinost plate P with the finger m3, and the lower inclined edge ofthe recess t'.

As an additional means of locking the bloc D in position, said block is provided with a lug, y, which is adapted to recesses in a standard, T, on the upper edge of the frame A.

Each of the plates P has a central elongated slot, to which are adapted three vertical shafts, S, the ends `of which are fitted to bearings in the top and bottom of the casing N., Each of these shafts has three arms, x, which engage with pins w on the plates P, the pins and studs being so arranged in respect to each other that but one stud at a time can occupy an advanced position between the fingers, the advancement of either of the other studs insuring the retraction of the stud previously advanced. This will be understood on reference to the diagrams, Figs. 8, 9, and 10.

Each of the plates P has a pin, t, to which is attached a cord, t,wound round a drum, t2, carried by a shaft or spindle projecting from one side of the casing N, and each of said spindles carries a drum, e, around which is wound a cord, t', one end of which is carried upward through an eye in a plate, o2, while the other end extends downward and is connected to a spring-plate, c3. The upper ends of the cords o are, by preference, connected to the cords of the Jacquard apparatus, as shown in Fig. 1, for instance, and the drums c and t2 are combined with suitable pawl-andratchet mechanism, so that the movement of the drum o, caused by the elevation of the cord el, will not affectthe drum t2, the reverse movement of the drum e, caused by the recoil of the springplate c3, however, being imparted to the drum t2, so as to wind the cord t thereon and effect the advancement of the plate P, to which said cord is connected.

The object of using the spring-plate 113 instead of operatin g the plates P directly by the IOO IOS

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jacquard i-s to prevent the advancement of the plates at a time when the other parts of the loom are not in. the proper positions for a change of the drop-boxes.

In carrying out my invention it is not necessary that the devices shown for operating the studs s and the strip e should be used in all cases. For instance, the said studs and the strip might be operated by cams or a patternchain, or the strip e and the bar d might .be dispensed with altogether, and the slide B reciprocated continuously from some moving part of the loom, the use of the strip and bar, however, being preferred, as it obviates the excessive wear which would be caused by a continuous reciprocation of the slide B.

Themeans for connectingthe drop-box frame to the block D will, of course, be varied as the character of the loom to which the operating mechanism is applied may suggest.

I claim as my inventionl. The combination of the slide B, devices `for guiding and reciprocating the same, the

guided block D, having spring-fingers, as described, the drop-box frame J, devices for connecting said frame to the block D, the studs s, and devices for advancing and retracting said studs, all substantially as set forth.

2. VThe combination of the slide B, devices for guiding and reciprocating the same, the guided block D, having a recess, z', and springfingers located therein, as described, the dropbox frame J, devices for connecting said frame to the block D, the studs s, and devices for advancing and retractin g said studs, as set forth.

3. The combination of the frame A, the slide B, having a swinging bar, d, the crank-pin a, devices for rotating the saine, the strip e, with inclined end, and means, substantially as described, for adjusting said strip.

4. The combination of the frame A', the slide B, having a swinging bar, d, and spring c for acting thereon, the pinion b, having a crankpin, a, the pinion f, having a cam, f', the strip e, having an inclined end, and devices for rotating said pinion f and operating the strip e, as set forth.

5. The combination of the casing N, the slotted plates P, having studs s and pins w, and the shafts S, having arms x, said arms m and pins w being arranged as described, whereby the advancement of one plate effects the retraction of the plate previously advanced, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JUSTUS DOERING.

Witnesses:

ALEXANDER PATTERSON, HARRY SMITH.

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