US 368987 A
Description (OCR text may contain errors)
s@ 3. WHEELER.
. I CONDUCTOR TIP. No. 368,987. Patented Aug. 30, 1887'.
W Q 351 gbtgmwqs I I N. PETERS. Photo-Lithographer. Walllinglun. ac.
UNITED STATES PATENT OFFICE.
' SCHUYLER S. WHEELER, OF NEW YORK, N. Y., ASSIGNOR TO THE C & C
ELECTRIC MOTOR COMPANY, OF SAME PLACE.
SPECIFICATION forming m of Letters Patent No. 368,987, dated August 30, 1887.
Application filed June 4, 1887. Serial No. 240,336. (No model.)
To all whom it may concern.-
Be it known that I, SCHUYLER SWHEELER, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Conductor-Tips, of which the following is a specification.
Heretofore flat tips for electric conductors have been'made each having a shank portion of solid metalwith a hole bored in its end to receive the conductor. This necessitated the tips being first cast and subsequently bored out, making them difficult to manufacture and comparatively costly.
My invention consists of a conductor-tip formed from a sheet-metal blank,which is first punched out and subsequently bent by proper dies, thus reducing the labor and cost of manufacture, besides making a good connection.
Figure 1 is aplan view of a blank from which my tip is made. Fig. 2 is a similar view of the blank partly formed into a tip. Fig. 3 is a view of the blank shown in Fig. 2, taken at right angles thereto. Figs. 4c and 5 are views of completed tips. Fig. 6 is a perspective view of a tip attached to. an insulated cable.
The blanks from which the tips are made may be punched or out by properly-shaped dies or otherwise from sheet metal, preferably copper.
The blanks, as will be seen by reference to Fig. 1, consist of two principal parts, A B, connected by a neck or contracted portion, a. The part A, which forms the contact portion of the tip, maybe shaped in any desired manner, the form which I have shown having two contact-fingers, a a. The portion B is adapted to be bent or rolled into tubular form and to embrace or clasp the wire or wires of the conductor. In Figs. 2 and 3 the clasp is shown partially formed. When in this condition the v end of the cable C may be inserted therein and the tip completed, as shown in Fig. 6, solder, c,or other suitable means being used, if found necessary, to secure the conductor wire or wires in the tube 13 in intimate contact with the tip.
While I do not wish to be limited to the shape of the part B of the blank, so long as it is adapted to be bent into tubular fiorm, yet I prefer the shape shown in the figures, wherein the part B lies about equally on each side of a line drawn longitudinally through the blank midway between the two fingers a.
. I) b are angular offsets projecting from the opposite edges of the part B. The shoulders b, formed by these ofi'sets, abut, as seen best in Fig. 6, this construction tending to keep the tube in shape and preventing single strands of the cable from being caught in the joint when folded over.
In Figs. 4 and 5 the neck between the parts A and B' is shown as bent upward, as at a", opposite the open end of the tube, thus covering up and protecting the raw end of the cable. In the construction shown in Fig. 4 theflatcontact portion A is raised only one-half the distance it is in Fig. 5, causing the tip to be symmetrical-that is, it brings the plane of partA in the plane of the center of the conductor C.
It will be seen that the device above described may be easily and cheaply constructed by comparatively simple tools, or asingle machine capable of manufacturing them rapidly and in large quantities might be easily constructed. Further, there is a considerable saving of metal by my invention, enabling a very light tip to be used. Where the wires of the cable C are small or numerous, it will be readily seen that a tip open as shown in Figs. 2 and 3 may be much more easily applied thereto, and will much more securely hold them than can a tip having a shank portion with merely a hole formed therein.
Without limiting myself to the exact construction shown, I claim 1. An electric-conductor tip having a flat contact finger or fingers and a clasp integral with the contact-finger and bent to embrace the ends of the conducting-wires, substantially asdescribed.
An electric-conductor tip having a contact finger or fingers and a clasp made from sheet metal having interlocking shoulders and bent to embrace the ends of the conductingwires, substantially as described.
3. An electric-conductor tip having a tubular portion adapted to embrace the conductingwires and a contactportion projecting forward therefrom and bent in proximity to the tubulnr portion to cover the open end thereof, sub- In testimony whereof I have signed my name stantially as described. to this specification in the presence of two sub 10 4. The herein-describcd sheet-metal blank, scribing witnesses.
having the part A, adapted to make electric 5 contact, and the flat portion 13, adapted to be SGHUYLER WHEELER bent into tubular shape to embrace an electric \Vitnesses: conductor, and having interlocking shoulders, D. 0. SMITH,
substantially as described. F. E. BROWN.