US628231A

US628231A - Haircloth-loom.

Info

Publication number: US628231A
Application number: US67960298A
Authority: US
Inventors: Charles E Pervear; William W Harrison; John Holt
Original assignee: Individual
Current assignee: Individual
Priority date: 1898-05-03
Filing date: 1898-05-03
Publication date: 1899-07-04
Anticipated expiration: 1916-07-04

Description

No. 628,23l. Patentea July 4; I899.

G. E. PERVEAR, W. W. HARRISON &. J. HOLT.

HAIRG'L'OTH LOOM.

(Application filed May 3, 1898.) (N0 Mo em 4 Sheets-Shaet l.

Inventors 6 201225 t Erica): I Mzilamm'rrzson. $521 96412 m Attorneya' m: mums PETER$ 00,, FNOYO-LIYHD WASHINGTON n. c.

No. 628,23I. Patented July 4, I899. c. E. PERVEAR, w. w. HARRISON & J. HOLT.

HAIRCLOTH LOOM.

. (Application filed May 3, 1898. I (No MOCIBL) 4 Sheets-Sheet 2.

v Inventors. (20199.5 EH3 ca 7 244mm pflm WWW "rm: nor-ms FEYERS c0. PfiQTO-LITHQ. WASHINGTON. o. c.

No. 628,23l. Patented-luly 4, I899; c. E. PERVEAR, w. w. HARRISON & .l. HOLT.

HAIRCLOTH LOOM.

(Application filed m a, 1898.)

4 Sheets-She's! 3.

(No Model.)

r n 15 S m a 6 707 amt W Attorneys No. 628 ,23l. Patented July 4, I899. c. E. PERVEAB; w. w. HARRISON & .1. HOLT.

HAIRCLOTH LOOM.

' (Application filed May 3, 1898.) (No Model-J 4 Shaets$heet 4.

I nven-to rs Cimie53ivear Wz'ZZL amW/Alrrz son.

QWJQM Attorney esses W1 n m: norms warns co. worc umou WASbflNGTON, a c.

UNITED STATES PATENT OFFICE.

CHARLES E. PERYEAR, WVILLIAM W. HARRISON, AND JOHN HOLT, OF

PAWTUOKET, RHODE ISLAND.

HAlRCLOTH-LOOM.'

SPECIFICATION forming part of Letters Patent No. 628,231, dated July 4, 1899.

Application filed May 3, 1898. Serial No. 679,602. (No model.)

To all whom, it may concern:

Be it known that we, CHARLES E. PERVEAR, WILLIAM W. HARRISON, and JOHN HOLT, of Pawtncket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Haircloth- Looms; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to stop-motions for looms, more especially to the looms used for Weaving haircloth. It is fully explained and illustrated in this specification and the accompanying drawings.

Figure 1 represents a top view of the loom with the heddles and part of the web removedto show the stopping mechanism. Fig. 2 is a vertical section of the loom, taken lengthwise on line 2 2, Fig. 1. Fig. 3 shows an end elevation of theloom. Fig. 4 is a perspective View of the parts of the stop-motion arranged together in working position. Fig. 5. shows a diagram of the driving-cams engaged with the heddle-cams in raising and lowering the heddles.

The object of this invention is to produce a stop-motion for the loom that shall operate instantly to stop the heddles and cloth-take-up mechanism when the nipper that draws the hairs across in theshed fails to catch the hair. As the weight of the running parts is so great that their momentum when running will not allow of the whole operating mechanism being stopped instantly with safety to the parts, the stopping is confined in this invention to the motion of the heddles, which are light and in fact are not moving at the time and are only prevented from starting by the stopping mechanism, and to preventing the operation of the take-up roll, which is also intermittent in its motion and at that time is not in operation, so that really nothingin motion is stopped, only these parts, the heddles and the take-u p, are prevented from starting, which leaves the shed unchanged and the web in the exact position it was when the nipper failed to take the hair. This prevents all loss of time excepting that required to make the mispick,

as the rest of the loom mechanism will continue to run and make the next pick-in the regular time. This makes it possible to run the loom at 'a much higher speed.

The construction of the loom, so far as is necessary to a full understanding of the invention, is as follows:

A A are the end frames ofv the loom, connected by beams in the usual way.

C is the lay, swingingon swords pivoted at their lower ends to the end frames.

D is the driving-shaft, having cranks to work the lay and the driving-cams D and turns in bearings in the end frames A A. An auxiliary shaft B, that operates the heddles J, is held at one end in a bearing on the end frame and at the inner end in a bearing in a stand S. This shaft B has'a crank e on its outer end that operates the heddles J by the connecting-rod a' and has a cam N, held to slide on it and turn with it by means of a spline in the shaft and a groove in the cam fitting on the spline. The cam D that drives the shaft B has two arms that engage in succession with two of the leaves of the cam N on the shaft B, (see Fig. 5,) each arm of the cam D giving the shaft B a quarter-turn, and

the two arms in succession give the shaft B a half-turn for each revolution of the shaft D, and cam D" in this way reverses the relative position of the heddles at each beat up of the lay. The shaft B also has a gear 61 made fast on it, that engages with a gear (1, fast on a short shaft 1;, held in bearings on the end frame. On the outer end of the shaft 1; a bevel-gear c is held, that engages with a bevel-gear 0, fast on the end of a horizontal shaft R, held in hearings on the outside of the end frame. The other end of the shaft R has a worm 17 fast on it, that engages with a worm-gear L, fast on the shaft of the cloth-take-up roll H. The mechanism for stopping the heddles and cloth-take-up roll when the nipper g fails to secure a hair consists of a short lever 0, held on a pivot on a stand j, attached to the end frame A. This lever 0 has thefeeler fpendent from the front end of it, which projects over the pathway of the lay C, so that the hair it in being drawn into the shed by the nipper 9 will be swung against the feeler f by the forward motion of the lay. An inverted-T-shaped lever K is pivoted at its center to the end frame in position to have its vertical arm, which is made broad at the upper end, rest against the end of the lever 0 when that lever is level. A vertical shaft F is held in hearings on the end frame and has a dog P, having two arms 19 12, arranged to slide up and down on its upper end and to turn wit-h the shaft. An arm g is made fast on the lower part of the shaft F. The back horizontal arm of the T-lever has a rod 7 in it, that projects in under the arm 19' of the dog P. A vertical lever G, held at its lower end in a step on the floor, has a fork at its upper end, that enters an annular groove in the sliding cam N and is connected by a rod 25 to the arm 9 on the shaft F. A close spiral spring I) connects the lever G with the end frame to draw the lever and cam N back after they have been drawn over by the cam g. A cam R is carried on the driving-shaft D to operate the arm 19 of the dog P, and a cam E is also secured to that shaft to push down the rod r in lever K when it has been raised; A close spiral spring 6 connects the front arm of the T-lever with the floor to draw down that arm of the lever when allowed to do so by the movement of the lever 0.

Other parts of the loom not herein described, such as the heddle mechanism on the top of the arch (not shown) and the mechanism for moving the nipper-rod, (not shown,) may be constructed in any of the ways usual in looms of this class.

The operation is as follows: iVhen the loom is started and the shaft D is in motion, the cam D comes in contact with the cam N and turns the shaft 13 a half-turn, causing the crank 6, through the rod a and heddle mechanism, (not shown,) to raise one set of the heddles J and depress the other and forms a shed of the warp Then the nipper g is carried through the shed by its mechanism to receive the hair h from the bunch 7c and draw it into the shed. As soon as this is done the lay C starts to beat the hair up in the web, and as the hair is carried by the lay against the feelerfit will push thefeeler toward the front of the loom and tilt the lever 0 out of level, so as to allow the T-lever K to be tipped over by the spring 2i, which caused the rod 1" to raise the dog P and keep its arm 1) from being struck by the cam R as it passes, and all the mechanism of the loom will continue running, and the cam E in passing will push the rod 0' down again, bringing the vertical arm of the T-lever to rest against the end of the lever 0, and the dog P falls down again cam by the rod 0" out of range of the cam D, so that the shaft will not be turned by it and the heddles will not be changed. The clothtake-up roll H will also be still; but as the lay swings back again the nipper will again pass through the same shed,as before, as the heddles have not changed it, and the work of the loom will go on and no indication of the mispiek will be seen on the cloth. As before stated, this allows the speed of the loom to be greatly increased from sixty up to eighty or more picks per minute, besides improving the appearance of the cloth.

Having thus described our improvement, we claim as our invention'and desire to secure by Letters Patent 1. In a loom, the combination of a drivingshaft, a cam fast thereon, an auxiliary shaft to operate the cloth-take-up roll, a sliding cam held on said auxiliary shaft and engaging when necessary with the cam on the drivingshaft, a feeler held to vibrate across the top of the lay, a nipper, a second cam on the driving-shaft, mechanism operated by said second cam, and governed by the feeler device to move said sliding cam, mechanism connecting said auxiliary shaft with the clothtake-up roll, and the cloth-take-up roll, substantially as described.

2. In a loom, the combination of a drivingshaft, a cam fast on said shaft, an auxiliary shaft, a cam sliding on said auxiliary shaft to engage with said cam on the driving-shaft when required, a gear on the auxiliary shaft, a short shaft held in a bearing on the end frame, a gear on said short shaft engaging with the gear on said auxiliary shaft, a bevelgear on the outer end of the short shaft, a horizontal shaft held in bearings across the end frame, a bevel-gear on one end of said horizontal shaft engaging with the bevel-gear on said short shaft, a worm on the front end of said horizontalshaft, engaging with awormgear on the cloth-take-up roll, a cloth-take-up roll, a feeler, a second cam on the drivingshaft, mechanism operated by said second cam to move said sliding cam on the auxiliary shaft, substantially as described.

3. In a stop-motion for a loom the combination of a driving-shaft, a cam fast thereon, an auxiliary shaft, a cam sliding thereon to be engaged with said cam on the drivingshaft to operate the heddles when necessary, a nipper, a feeler held to vibrate across the top of the lay, mechanism controlled by the feeler and arranged to move the cam on the auxiliary shaft out of engagement with the cam on the driving-shaft, and prevent the changing of the heddles when the nipper fails to take a hair, substantially as described.

4. In a loom the combination of a lay, a driving-shaft, a cam fast thereon, a nipper to draw a hair into the shed, a short horizontal lever held on a stand attached to theloomframe, a feeler pendent from one end of said short lever, an inverted-T lever pivoted to the loom-frame and arranged to have its upa rod connecting said arm on the vertical shaft, to a lever operating the sliding cam, said lever, and sliding earn an auxiliary shaft, a second cam fast on the driving-shaft to operate said dog, and a third cam fast on the driving-shaft to operate the inverted-T lever, substantially as described.

In testimony whereof We have hereunto set 15 our hands this 30th day of April, A. D. 1898.

. CHARLES E. PERVEAR.

WILLIAM W. HARRISON.

, JOHN HOLT. I In presence of- BENJ. ARNOLD, HOWARD E. BARLOW.