US3038A

US3038A - Island

Info

Publication number: US3038A
Authority: US
Publication date: 1843-04-10
Anticipated expiration: 1860-04-10

Description

jyoa

.Fly. 3.

h N. PETERS. PHOTDUTHOGRAPHER. .I1NGTO UNITED STATES PATENT OFFC;

CULLEN WHIPPLE, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO ;ALEX HODGES.

MACHINE FOR REMOVING THE BURRS FROMVTHE UNDER SIDES OF THE HEADS OF WOOD-SCREWS.

Specification form ng part of Letters Patent No. 3,038, dated April 10, 1843.

To all whom it mot/y concerm" Be it known that I, CULLEN WHIPPLE, of the city of Providence, 'and State of Rhode Island, have invented a new and useful Machine for Removing the Burrs from the Under SidesoftheHeadsofWood-Screws,whichburrs are raised thereon in the process of making the nick or slit in the head, and which have not heretofore been removed by machinery; and I do hereby declare that the following is a full and exact description thereof.

The machine which I have invented for the foregoing purpose is in the accompanying drawings represented of the full size of that whichI have 'essayed V Figure l is a front view of themachine or of that part opposite to which the person stands who is using it. Fig. 2 is a side view of it; Fig. 3, a section through the main spindle or arbor; Fig. 4, the under face of the machine, and Fig. 5 the npper face of the lower end.

A A is the bed-piece or main frame, which supports the working parts, and which isnsually of cast-iron. A' is a piece projecting therefrom by which it may be fastened to a bench. i

B is a wlirl or pulley on the main arbor or spindle C C. This arbor runs and slides in collars in the heads .A A The arbor O widens out at its lowerend C' and is divided, so as to form two checks between which the jaws D D are to be received; These jaws work upon pins a a, which pass through them and through the checks.

H H is an adjustable slide, which is fastened to the 'bed-piece A by a screw b passing through a slot. The part H' of the adjustable slide, which stands at right angles to the part H, has on its face a piece I, fastened to it by a screw c, and this holds the tool Gr, by which`- the burrs are to be removed from the under sides of the heads, the proper form being given to the cutting part G' of said tool to adapt it to th'e bevel of the head.

J is a steel plate, in which there is a countersink d to admitthe head of the screw to come into contact with the tool Gr'. Where the tool is to act upon the head the steel plate J is cut away, as shown at e. The arbor O C is tubular, and there passes through it a sliding bolt K, having a wedge-formed head K',

by which the jaws D D are to be closed, and i this closing will take place as the bolt is drawn back, and the wedge part` K' is forced against the tails f f of the jaws.

F' is a shaft, to which is attached an arm F, that is forked at its outer end Fand is received between collets L L, attached to the sliding bolt K.

E E are a handle and lever by which the sliding bolt K and the spindle C are drawn upward. A spiral spring M surrounds the arbor C, and hearing against the uppermost of the heads A and against the pulley B causes the spindle and bolt to descend, when the handle E is allowed to recede and renders the motion in both directions regular and smooth. As the bolt K descends it is brought into contact with the pins g g, which are made fast to the-jaws, and forces them open.

In using this machine, when the handle E has been moved back and the sliding bolt and arbor have descended, a blank which has been notchecl is fed in through the countersunk opening in the plate .L'so as to enter between the jaws. The handle E is then drawn forward, which closes said jaws and brings the' v head up against the cutting-edge of the tool G, by which the removal of the burr is instantaneously effected, the edge of the tool projecting a little within the countersink. On removing thehandle back the blank is liberated and falls out and another is fed in.

Having thns fully described the nature of my machine for removing the burrs from the under sides of the heads of not-ched blanks for Wood-screws and shown the manner in which the sane operates,what I claim therein as new' and desire to 'secure by Letters Patent, is-

' The manner in which I have combined and arranged the hollow arbor or spindle CC, the sliding bolt K, the jaws D D, and the tool or cutter G, with their appendages, so as to constitute an instrument the respective parts of which are constructed for the purpose of and 'Copper-ate in efiecting the removal of the burr, substantially in the manner set forth.

CULLEN WHIPPLE. witnesses:

JAMES WILSON, H-ENRY MARTIN;