USRE1821E - Machine for making knitting-needles - Google Patents

Machine for making knitting-needles Download PDF

Info

Publication number
USRE1821E
USRE1821E US RE1821 E USRE1821 E US RE1821E
Authority
US
United States
Prior art keywords
wire
lever
machine
needles
cam
Prior art date
Application number
Other languages
English (en)
Inventor
Thomas Sands
Publication date

Links

Images

Definitions

  • My machine is intended for saving a great part of the labor that has heretofore been required for making machine knitting-needles by hand, and is so constructed that the several operations of carrying the steel wire forward to the block, making the eye, slabbing down the wire to the proper shape and taper of the barb, and cutting OK the length suitable for a needle are all performed automatically, and the needles are dropped into the box ready for the hands of the polisher.
  • the machine is about three feet in length and about two and a half in width.
  • the power is applied by a small pinion which drives the large gear A, Figure 1 and gives a steady and uniform motion to the shaft B, which extends the whole length of the machine, and revolves in the direction shown by the arrow in suitable bearings placed at opposite sides of the frame.
  • Attached to the horizontal shaft B are three cams, G, D, and E, their shape, as seen in the side views, Figs. 2, 3, and 4, being such as to produce the required movements of the three principal groups of mechanism.
  • a horizontal counter shaft, F extends across the top of the machine and is driven by band from the pulley Q. It carries a small grooved pulley, G,
  • the band H which, by means of the band H, drives the pulley I and gives rotary motion to the wirestraightener, which consists of a short tube, J, turning in the bearin gs N N, and having at its central part a rectangular frame, K K L L, across which extend three bars having holes (placed out of line with each other) for the passage of the wire 0.
  • the steel wire passes from the reel P into one end of the hollow shaft J and issues at the other end of the shaft perfectly straight and in readiness to be formed into needles.
  • the end T of the lever is made to communicate a greater or less traverse to the short connecting-link Z, which moves the sliding platform 1, being fastened to it by the pivot 2.
  • This platform slides upon the dovetailed rail or bar 3, the greatest length of its traverse being equal to the length of the longest needle required to be made.
  • the vertical part 4" is always over some part of the broad cam D, which must be of sufficient length to allow the lever to travel over it, as it (the lever) moves with the platform to move the wire to the cutter, and the opposite end 4'is over the anvil or block 61, upon which the needle-wire O rests, being supported in a longitudinal groove, 7, upon its face.
  • This block stands in a holdingblock, 8, and is kept firmly in place by the set-screws 9 9.
  • the punch that forms the eye is shownat 48, the end being formed in the exact shape required to cut into and spread the metal to form the eye.
  • a vertical stem, 11, rises from it and is very accurately fitted into the en larged head of the lever 4. Through the top of this head a screw, 12, plays by which the height of the punch is adjusted.
  • a guide, 13, is attached to the top board, 41, and gives support to the wire 0 as it moves from the hollow tube J to the block 61.
  • Figs. 1 and 2 The apparatus for cutting or slabbing the wire down to the proper size and taper, and also for cutting off the length required for a needle, is shown in Figs. 1 and 2.
  • the cam 16 is fastened to the shaft B and revolves in contact with the friction-slide 17, that projects from one end of the lever 18.
  • This lever has the fulcrum 20 at its opposite end, where it is supported by the stud 21, that is secured to the table 41.
  • the friction-slide 17 is held in contact with the cam by the spiral spring 32.
  • a pitman, 22, is connected by pivots 19 and 23 with the lever 18 and knob 24 on the under side of a horizontal flat lever, 25.
  • the lever is hung on centers at 42 42, and its front end carries a small burr-cutter wheel, 30, grooved on its periphery, and which is made fast to the end of the shaft 43, secured thereto by a nut, 31.
  • An upright stud, 29, rises from the table of the machine and passes through a rectangular slot in the lever, serving to keep it steady as the cutter rises and falls.
  • a small piece of iron, 36 is fitted to a bed-piece that rests upon the table 41. A hole through one end of it steadies the wire 0, while the other is beveled down to allow the cutter or burrwheel to come in contact with the wire.
  • a cam, O (in contact with cam 16,) -is affixed to the shaft B and carries a short projecting stud or wiper, 15. This comes in contact at each revolution with the part 33, that projects from the vertical part 34 of the sliding bar 34 35. This bar is thus moved forward horizontally, traversing in guidesor slides 44 45 40 46 and forces the cutter 39 against the wire, cutting it off to the length required. The slide is brought back and held in contact with the cam by the spiral spring 28.
  • the steel wire is coiled upon the reel and the free end of it is inserted in .the tube of the wire-straightener and led through the bars to the eye-block, where the punch is brought down upon it.
  • the sliding platform 1, upon which the eye-m akin g apparatus is supported, is now at the left end of the rail 3.
  • the cam E revolves the slot R moves the lever T T, and the connectingrod Z, which pushes the platform to the right and draws the wire 0 through the straightener,-the part 4 of the eye-punch lever traversing at the same time across the breadth of the cam D.
  • the line 49 shows the form of the face of the cam 16, the distance of the face from the center of motion being greatest at the beginning of the stroke. This depresses the burr-cutter to the lowest point where it begins to cut or slab down the wire at its extreme end, and the gradually-decreasing radius of the cam permits the burr-cutter to rise gradually as the wire is moved forward, so as to give the required taper to the needle. It will be perceived that by varying the face of the cam the taper of the needle may be changed, or it may be made to cut away the steel at any part of the length, and thus give any form required to the needle.
  • the eye of a machine knitting-needle is not a perforation through the metal, but a cavity pressed to receive the point or barb, sometimes termed the beak, of the needle, that the previously-formed loop of the fabric which is on the body of the needle may be passed over the barb or beak and over the newly-formed loop which is within the barb or i wire,' the means for forming the eye, and the beak.

Family

ID=

Similar Documents

Publication Publication Date Title
USRE1821E (en) Machine for making knitting-needles
US38987A (en) Improvement in making knitting-needles
US550991A (en) meyee
US685603A (en) Machine for making steel-wire fence-stays.
US49881A (en) Improvement in machines for cutting wood gear
US33707A (en) Improvement in machinery for making needles
US239412A (en) File-cutting machine
US515347A (en) Machine for bending jacquard hooks
US208515A (en) Improvement in machines for bending chain-links
US1175015A (en) Die-press.
US553908A (en) Wire bending and cutting machine
US754552A (en) Machine for inserting transverse wires in solid-rubber tires.
US45661A (en) Improvement in machines for making horseshoes
US869006A (en) Wire-forming machine.
US496489A (en) Island
US46392A (en) Improvement in machines for mortising plane-stocks
US143226A (en) Improvement in machines for forming spring-keys
US537472A (en) T tt xtttx
US343363A (en) Shoe-nailing machine
US760490A (en) Wire-bending machine.
US360933A (en) Leather cutting and embossing machine
US58762A (en) Improvement in punching leather
US45850A (en) Improved machine for forging file-blanks
US58470A (en) Improvement in machines for making dies for braid and embroidery
US16794A (en) Perry g