US1528328A

US1528328A - Bumper for looms

Info

Publication number: US1528328A
Application number: US685753A
Authority: US
Inventors: Orlando P Hargrove
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-01-11
Filing date: 1924-01-11
Publication date: 1925-03-03
Anticipated expiration: 1942-03-03

Description

o. P. HARGROVE Mar. 3, 1925,.

BUMPER oR LooMs Filed Jan. 11. 1924 2 Sheets-#Sheet l Mar. 3,. `1925.

O. P. HARGROVE BUMPER FOR Looms Filed Jan. 1l, 1924 2 Sheets-Sheet .2

Patented `Mar. 3, '1925o UNITED STATES j inane PATENT oFFicE.

OIRflIniIN'lJOk I. HARGROVE, OF WAYLAND, NEW' YORK.

BUMPER FOR LOOMS.

Application filed January 11, 1924. Serial N'o. 685,753,

T 0 @ZZ whom it may concern.'

Be it known that l. ORLANDO P. Han-` cnovn, a citizen of the United States, residing at Wayland, in the county of Steuben and State of New York, have invented a new and useful Improvement in Bumpers for Looms, of which the following is a specification.

T his invention relates to improvements in bumpers of the kind with which the picker stick of a loom is adapted to cooperate to stop the movement of the picker stick.

The objects of this invention are tc provide a bumper of this kind which is simple in construction and effective' in operation. and on which the leather strip, with which the picker stick impacts, is so mounted that it may be readily removed and replaced by another leather strip; also to provide a bumper of this kind which offers a lgradually increasing resistance to the movement of the stick and which can be readily adjusted toy adapt av bumper to offer an increased or decreased resistance to the movement of the stick, as may be desired; also to provide a bumper of this kind which is of strong and durable construction and which is economical in the use of leather strips; also to improve the construction of bumpers of this kind in other respects hereinafter specified.

In the accompanying drawings:

Fig. l is a side view of a bumper embodying my invention, showing` the same mounted on th-e frame of a loom and showing the' picker stick of the loom striking the bumper.

2 is a top plan view of the bumper, on an enlarged scale.

Fig. 3 is atop plan view thereof showing some of the parts of the bumper in different positions.

Fig. 4E is a side elevation thereof.

Fig. 5 is a sectional elevation thereof on line 5 5, Fig. 2.

Fig. 6 is a rear elevation thereof.

Fig. 7 is a fragmentary top plan view of a bumper of slightly modified construction.

A, Fig. l, represents a part of the frame of a loom and B a picker stick which is pivoted at its lower end to the loom and which is movable about its pivot to strike the shuttle for the purpose vof passing the sameacross the loom. A bumper embodying my invention is mounted on the part A of the frame of the loom and the picker stick B is shown in engagement with the bumper.y

The bumper shown in the drawings and which embodies my invention includes a substantially Q-shape'd frame member C which has a base or body portion c provided with suitable means for securing the same to the frame of a loom, such for example, as holes c through which bolts or other securing means (not shown) may pass, which secure the frame of the pumper to the frame of the loom. The frame C of the bumper has a pair of arms c2 which eX- tend forwardly from the body portion and which preferabily form stop shoulders o3 with the body portion c of the bumper frame. Each of the forwardly extending arms c2 of the frame of the bumper has pivotally secured thereon a lever D. In the constructionishown for this purpose, each of the arms is provided with kan aperture through which a pivot pin l extends and the lever D is'provided with a corresponding aperture for the pivot pin ci, which may be secured in place in kany suitable or desired manner. The lever D and the forwardly extending arms yc2 may be of any suitable or desired construction, the arms shown being flattened on their upper faces andthe levers 'D being of a shape corresponding to the shape of the forwardly eX- tending arms so that the flat faces of the levers rest against the flat faces' of the arms. The rear end al of each of the levers is adapted to engage with the shoulders 03 on the frame member of the bumper to limitV the extent to which the leversvD may swing relatively to the frame member of the bumper.

A. strap F of leather or other flexible material is stretched across the outer ends of the two levers andfor this purpose the outer ends of each of the levers l) 'is provided with means for attaching the strapthereto. In the construction shown each of the levers has an upwardly extending postor arm E, to which the end 'of astrap F may be secured. These upwardly extending arms or posts of the levers are preferably substantially L-shaped in cross section so as to resist the strain due to the striking of the picker stick against the leather strap Fand y are preferably provided with rounded shoulders or edges e around which the ends of the strap pass. The strap is secured to the sides of the posts in any suitable man ner, for example, by .means` of bolts f which pass through holes in the. posts E and in the leather strap F and which engage clamping pieces or washers 7 to press the ends of the strap against the post-s E to securely hold the ends of the strap of the posts.

The swinging of the levers D from the position shown in Fig. 2 to that shown in Fig. 3, due to the picker stick B striking against the strap F, is opposed by suitable resisting means, which also tend to keep the strap taut across the space between outer ends of the levers. In the construction shown this is accomplished by means of one or more springs G which connect the inner ends of the levers D. The springs shown are connected with the levers D by means of pins or posts g secured to the levers in rear of the pivot pins 0l and extending upwardly therefrom, and means of any suitable kind may be provided for securing the springs on the posts. In the construction shown, each of the springs is provided at its ends with eyes into which the posts g are adapted to extend, and nuts or the like g are provided which engage with threaded parts on the postsfor holding the eyes of the springs on the posts. If desired, spacing sleeves g2 may be provided for holding the springs in definite relation to the posts. These springs, therefore, may be easily disconnected from the levers D and may be replaced by springs of dierent strength if desired, or by other springs, in case of damage. As shown in Fig. 2, the spring normally pulls the levers D into a position in which the shoulders d thereof engage the shoulders c3 of the frame member of the bumper. Consequently the strap F will not become unduly stretched due to a continual pull thereon by the spring. thus prolonging the life of the strap. By changing the springs and replacing them by stronger or weaker springs, the bumper can readily be adapted to cooperate with different picker sticks in such a way as to properly cushion the-blows of the sticks.

Fig. 7 shows a bumper of slightly7 modified construction which is so made that the fulcrum of each of the twolevers may be changed as may be desired, for the purpose of lfurther increasing the range of cushioning effects which may be produced. Inthis ca'se the levers D and the armsof the frame of the bumper are provided with two or more holes, into either of which a pivot pin I may be inserted. In the construction shown, thel pivot pin I is shown in one of the holes, and K represents the other hole. When the parts are in the position shown in Fig; 7 the spring will exert aconsiderably greater pull upon the strap than when the pivot pin I is in the hole K. Consequently byk proper arrangement of the pivot pin, as well as by selection of springs of different strengths, the resistance of the strap to the movement of the picker stick can be varied as may be desired for the particular picker stick with which the bumper is to cooperate.

The bumper described is strong and rugged in its construction and is economical in that it uses a comparatively short leather strap F, and since these straps must be of a high grade of leather and are quite expensive, this item is of considerable importance. The'strap can be easily mounted on the levers or removed therefrom, without removing the springs Gr, since when the strap is removed, the spring merely holds the rear ends of the levers D against the shoulders c3. By providing the arms c2 and the levers D with extensive fiat bearing surfaces, the bumper is welly able to resist severe blows to which it issubjected by the picker sticks'. By means of the construction shown, a blow of the picker stick against the strap Frwill result in a swinging` of bot-h of the levers about their pivots so that there is no grinding or rubbing action of the picker stick against the strap F, which helps to increase the life of the strap.

I claim as my invention:

1. A bumper for the picker stick of a loom or the like, including a rigidv structure, having spaced forwardly extending arms, levers pivotally mounted on the arms, a flexible strap ixedly attached at its ends to the levers, and a spring connecting the levers for holding the strap normally taut and to maintain the levers normally within the bounds of the structure.v

2. A bumper for the picker stick of a loom or the like', including a frame having a pair of spaced arms extending therefrom, levers pivotally mounted on the respective arms, a strap constituting the sole connection between the levers at one end, said strap being lixedly secured at its ends to the leve-rs, and a spring constituting the sole connection between the other ends of the levers and normally holding the strap taut and the .leverst within the bounds of the frame and the arms.

3. A bumper for the picker stick of a loom or the like, including a frame having a pair of arms extending therefrom, there being abutment shoulders on the frame at the inner ends of the arms, levers fulcrumed upon the respective arms, a flexible strap fixedly secured at its ends to the respective levers and constituting the sole connection between said levers at one end, and a spring connected to the'end portions of the levers for holding said levers normally pressed against the shoulders and the strap normally taut` ORLANDO lz". HARGROVE.