US333824A - Peters - Google Patents

Description

(No Model.)

W. BREMNER.

KNITTING MACHINE.

No. 333,824. Patented Jan. 5, 1886.

IWW

UNITED STATES PATENT OEEICE.

WILLIAM BREMNER, OF GEORGETOWN, ONTARIO, CANADA.

KNLTTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 333,824, dated January 5, 1886.

Application filed January 16, 18,85. Serial No. 153,073. (No model.) Patented in Canada January 19, 1885, No. 20,918.

To all whom it may concern.-

Be it known that LWILLIAM BREMNER, of the village of Georgetown, in the county of Halton, in the Province of Ontario, Canada, machinist, have invented a certain new and useful Improvement in Knitting-Machines; and I do hereby declare that the following is a full, clear, and exact description of the Same.

The object of the invention is to devise simple mechanism by which the needles may be thrown into or out of action automatically, for the purpose of widening or narrowing the work, as in heel-and-toe work; and it consists, essentially, of an arrangement of pivoted dogs and gates located and operating in connection with the needle-cams, and provided with ad- 1 justing mechanism by which the pivoted dogs and gates may be set to accomplish their work,

substantially as hereinafter more particularly explained, and pointed out in the claims.

The invention will be described as applicable to that class of circular machines in which the motion of the cylinder is reversed to form the swell of the heel, as in the Patent No. 174,763, of 1876; but it will be understood that the essential features of the invention will n serve efticiently in other relations.

Figure 1 is an inside View of the needlecams, showing the pivot-ed dogs and gates for throwing the needles into action, as required in heel-and-toe work. Fig. 2 is an inside view 1 of the needle-cams, showing the pivoted dogs and gates set for throwing the needles out of action, as required in the heel-and-toe work. Fig. 3 is an outside view showing the mechanism for actuating the dogs and gates as it 1 will appear when they are set as shown in Cams.

D are what I term pivoted gates.77 E is the dog for throwing the needles into action, and F the pivoted dogs for throwing t the needles out of action.

G is a sliding plate having slots s adjust- .ably held on the outside of the cam plate or cylinder H by pins s, which are rigid with cylinder and arranged to actuatethe pivoted gates D by means of a pin, a, fixed to each gate D, and extending through an inclined slot, h', made in the earn-plate H into a diagonal slot, b, formed in the sliding plate G. In the position it is shown in in Fig. 3 the plate G will close the gates D, as shown in Fig. l, and when the plate Gis adjusted as shown in Fig. 4 the gates D will be opened, as represented in Fig. 2.

I is a lever pivoted centrally on the outside of and to the cam-plate H.

d and e are rods pivoted on either side of the center and to the lever I, their upper ends being bent, so as to extend through slotsf. When the lever I is set at an angle, as shown in Fig. 3, the bent upper end of the rod el will be drawn to the bottom of its slot f, which action presses down the end of the dog E below the top rim, h, ofthe cam-plate H, so that the heel of the needle J traveling toward it will come in contact with the said dog and effect the purpose hereinafter' explained. Vhen the lever I is horizontal, as shown in Fig. 4, the end of the dog E will be held above the top rim of the cam-plate H, so that the needles traveling along the said rim will pass the dog without being affected thereby. It will be noticed that the pivoted pawl Kis held downward by the spring L,and acts against the tail of the pivoted dog E, so that-the head or end of the dog E will be held up by the pressure of the spring L, the said spring being sufiiciently elastic to allow the dog E to turn on its pivot, so that its end will spring up on either one side or the other, according to the side of its tail against which the pivoted pawl K may at the time be pressing.

Having now referred to the principal elements involved in my invention, I shall proceed to explain brieiiy their operation and the effects produced by them. I may mention that as far as the working of my device is concerned it makes no diderence whether the needles are caused to travel and the needlecams held stationary or the needle-cams made to move and the needles held stationary, so far as their horizontal movement is concerned. For the purpose of this description we will assume that the needles move and that the IOO cam-plate is stationary. There being nothing i; =s

peculiar in a needle-cylinder of this kind,it is not necessary to show it. I therefore `merely indicate a single needle, showing its changes of position by dotted lines. When the needles are out of action, their heels are held against the top rim of the cam-plate H by the tension of the yarn. XVe will assume, first, that the operator wishes to widen the knitting, as in heel 0r toe work. Any operator will understand how this is accomplished. It is therefore merely necessary to say that instead of pushing down by hand the needle itis desired` to bring into action, the operator adjusts the roller g in the slot g of the plate M so that the plane of its motion shall be below the top edge of the lever I. As the rollerg is adjust ably held by an ordinary setscrew to the plate M, which is attached to the moving needle cylinder or plate, each backward or forward movement of the needle-cylinder brings the roller g against the top edge of one of the arms of the lever I, causing the said lever to tilt. As indicated in Fig. 3, the roller g hasjust passed the lever I, traveling in the direction indicated by arrow marked on that figure.. Vhen the motion of the needle-cylinder is reversed, the roller g repasses the lever I, causing it to tilt in the opposite direction. This alternate tilting of the lever I acts through the rods d and e on the dog E, as before mentioned. In Fig. l the rod d is shown acting against the dog E, so as to hold the head or end below the top rim of the cam-plate H.

For the purpose of the description we will assume that the needle J is the one that is to be thrown into action. It is shown in Fig. l traveling as indicated by arrow; consequently its heel comes in contact with the head or end of the dog E, which in turning on its pivot draws down the needle J into action, as indicated by dotted lines in Fig. 1, the motion of the pivoted dog E carrying the needle J from the top side ot' the needle-cam A to the bottom side of the needle-cam C, which carries it down into action. By the time the needle leaves the dog E to follow the cam G the said dog E has been carried sufliciently far to change the side of its tail against which the pawl Kis pressing. Consequently the spring L causes the head or end of the dogE to spring up above the top rim of the cam-plate H, where it remains until the machine is reversed and the roller g on the plate M comes in contact with the opposite side of the lever I, tilting thesaid lever and causing the end of the rodeto come in contact with the dog E, so as to hold its head or end below the top rim of the camplate H, ready to receive the heel of the first needle and carry it over to the cam A in the same manner as it carried over the needle to the cam C when the machine was working in the reverse direction. It will thus be seen that the needles required to be thrown into action are automatically acted upon without any attention on the part of the operator further than to see that the roller g is correctly set at the commencement.

In order to throw the needles out of action again in the same manner as they were thrown into action,tlie operator first adjusts the roller g so that it will clear the top edge of the lever I when the said lever is horizontal, as shown in Fig. 4. The sliding plate G is then forced into the position it is shown in in Fig. 4, which action opens the gates D, as shown in Fig. 2. IVe will assume that the needle .I is traveling in the direction indicated by arrow. Its heel will therefore come in contact with the dog F, which turns on its pivot and carries the heel of the needle toward the cam C, lifting it onto the top edge of the said cam, by which cam the needle is carried up out of action, and is held against the top rim of the cam-plate I-I by thetension on the yarn. As soon as the dog F has carried the needle J onto the top side of the cam C,it falls and permits the other needles to follow around the lower eam-groove. IVhen the first needle passing through the lower groove comes in contact with the dog F on the lefthand side of the gure,this dog is thrown over on its pivot till it assumes the position previously occupied by the dogF on the right-hand side of the gure, ready for the first needle coming back when the machine is reversed. In this way the first needle coming in contact with the dog F is thrown out of action. The dog falls into the position, as indicated by dotted lines, and is carried back into position by the first returning needle, when the movement of the cam-plate is removed.

I do not show a needle-cylinder, consequently I cannot show any connection between the plate M and the said cylinder; but as I claim nothing peculiar in this connection or in the needle-cylinder itself it is not necessary to show it, it being sufficient to say that the plate M must be attached to some moving part of the machine in order to operate as described.

I am aware that it is not new to combine with the cam-cylinder of a knitting-machine having cams pivoted dogs located above said cams, and therefore do not claim such broadly, but limit myself to such use when a pivoted dog is employed above and between the cams.

What I claim as my invention is 1. The combination, with the knitting-machine cam-cylinder provided with the needleoperating cams A B C, of the dog` E, pivoted between said cams A O, and a lever and con,1 nections for throwing said dog in the path of the idle needles, as set forth.

2. The combination, with the cam-cylinder having cams A B C, of a dog pivoted between said cams A C, a spring arranged to hold said dog with its needle-engaging end in either direction, and a lever and rods d e, for depressing the free end of the dog to throw it into the path of the idle needles, as set forth.

3. The combination, with the cam-cylinder H, having cams A B C, of the dog E, pivoted between the cams A C, the pawl K, and the spring L, substantially as and for the purpose specified.

. 1.1.. The combination, with the cam-cylinder IOO IIO

having stationary cams A B C, the dog E, pivoted between said cams A C, the pawl K, spring L, lever I, and intermediate connections, as described, for throwing the dog E into the path of the idle needles at will, all arranged and operating substantially as and for the purposes specified.

5. The combination, with the cani-cylinder, needles, and dog E, arranged as described, of the lever I, pivoted centrally to the cylinder, the rods d e, pivoted to said lever, one upon each side of such central pivot, and having bent ends, which serve to engage and depress the dog to throw it in the path of the idle needles, and the adjustable roller g, arranged to engage the lever I, as and for the purpose set forth.

6. The combination, with the cam-cylinder having cams A B O, of the dog E, pawl K, spring L, lever I, rods d e, and adjustable roller g, all arranged and operating for the purposes set forth.

7. The combination, with the cam-cylinder having cams A B C, of the pivoted dogs F, as shown, the gates D, arranged to be thrown into or out of contact with the cams A or C at will, the slide G, and connections with said gates, as set forth.

8. The combination, with the cam-cylinder having cams A B C, of the pivoted dogs F, arranged one upon either side of said cams, and the pivoted dog E, located above and between said cams A C, said dogs being constructed to engage the needles and force them to the upper side of the cams, and to lower the needles successively to render them acting and nonacting, as set forth.

'9. The combination, with the cam-cylinder provided with needle-actuating cams A B C, and with the pivoted gates D, arranged to be thrown into or out of contact with said cams at will, of the dogs F, arranged adjacent to said point of contact, as and for the purposes set forth.

10. The co1nbination,with the cam-cylinder H, having'needle-aetuating cams and slots h', dogs F, and pivoted gates D, having pins a, of the sliding bar G, having inclined slots b, all arranged and serving as and for the purposes set forth.

Toronto, December 29, 1884.

WM. BREMNER.

In presence of- GHAnLEs C. BALDWIN, F. B. FETHERsIoNHAUGH.

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