US609421A

US609421A - Device for attaching or detaching electric-lamp bulbs

Info

Publication number: US609421A
Authority: US
Publication date: 1898-08-23
Anticipated expiration: 1915-08-23

Description

Patented Aug. 23, I898.

Nu. 609,42I. c. a. EDWARDS.

DEVICE FOR ATTACHING 0R DETACHING ELECTRIC LAMP BULBS.

(Application filed Jan. 24, 1898.)

(No Model.)

- Vwryi 'rw y,

UNITED STATES PATENT EICE.

CHARLES e. EDWARDS, 0E ALBERT LEA, MINNESOTA.

DEVICE FOR ATTACHING OR DETA CHING ELECTRIC-LAMP BULBS.

SPECIFICATION forming part of Letters Patent No. 609,421, dated August 23, 1898.

Application filed January 24, 1898. Serial No. 667,791. (No model.)

To all whom, it may concern:

Be it known that I, OHARLEs G. EDwARDs,a citizen of the United States, residing at Albert Lea, in the county of Freeborn and State of Minnesota, have invented certain new and useful Improvements in Devices for Attaching and Detaching Electric-Lamp Bulbs; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters ofreference marked thereon.

The present invention has for its object to provide a simple as wellas effective and eas ily-operating device by which the glass bulbs or globes of incandescent electriclamps may be conveniently attached to'or detached from their supports which project from a ceiling, wall, or other high place beyond the reach of the hand; and it consists in a device of the above character constructed substantially'as shown in the drawings and hereinafter described and claimed.

Figure 1 of the drawings represents a perspective view of the complete device, showing the bulb holder or grasp in full and dotted lines in positions, respectively, for removing the bulb from the side wall or from the ceiling, the bulb being shown in dotted lines; Fig. 2, a side elevation thereof, partly in section.

In the accompanying drawings, A represents a suitable bracket of anypreferred construction and form, which bracket supports a rotatable and removable horizontal shaft B, having detachably connected at one end a suitable grasp or holder 0 to engage with the glass bulb of an electric lamp. The bracket, as will be seen, consists of a rectangular plate having its opposite ends bent upward at right angles to form a bearing at each end of the plate, and thereby provide a substantial support at each end of the shaft. This not only forms a perfect support for the shaft, to prevent any lateral displacement thereof, but a brace for the bracket, to prevent it twisting or bending out of shape, which in either case would cause the bevel-gear to become out of mesh, which is entirely avoided by the use of the bracket with the double bearings, as shown. This grasp or holder C comprises a plurality of spring-wire sections a, which are The wire sections a of the grasp or bulb holder, with proper pressure by the operator, will open sufficiently to take in the bulb, the slight corrugated covering of soft rubber on the sections preventing the slipping of the grasp or holder while turning the bulb.

The grasp or holder 6 connects with a collar 0' to fit over the end of the shaft B and is held thereon by a set-screw 1), thereby enabling the holder to be removed and a larger or smaller size substituted therefor when found necessary.

The end portion of the shaft to which the grasp or holder is attached is supported in a bearing-sleeve D, and upon this sleeve is mounted a bevel-gear E, a set-screw d holding the gear to the sleeve and the sleeve to the shaft, so that the sleeve and gear will revolve therewith.

The gear'E meshes with a similar gear F, rigidly connected to the upper end of a tubular stem e, which stem extends down into the upper end of a handle Gand is held thereto, so that the handle and gear will revolve together.

' The handle G, which may be of any suitable construction and either of metal or wood, may be formed in sections or in any other well-known manner, constructed so that it may be lengthened or shortened to adapt it for use in high or low places.

In Fig. 1 of the drawings the grasp or holder is shown in a horizontal position, in which position it is adapted for operation in attaching or detaching the bulb from its support upon a side wall or other similar place.

When it is desired to use the device where To keep the device a suitable distance from the wall when operating the same, I provide what I term a spring-guard, which comprises the two spring-arms I, formed of flat strips of spring metal, which are curved at their outer or bearing ends, as shown at Z. This guard is connected to a shank h, which enters the horizontal portion H of a T-shaped coupling, the vertical portion 9 of said coupling encircling the handle G of the device, and is held stationary while the handle turns by means of a brace J which has its respective ends connected to the bracket A and to the coupling. The spring-guard is capable of adjustment in two directionsviz., to bring it nearer to or farther away from the handle of the device or can be adjusted upon its axis or upon the are of a circle-and is held in its adj us ted position by a set-screw i, or when the guard is not required for use it may be removed. This adjustment of the guard adapts it to the angle necessary for the successful operation of the device when attaching or detaching the bulbof the lamp. This guard may be of any preferred construction, and any guard that will serve the purpose to keep the device the required distance from the wall when operating the same may be substituted for the construction of shown and described.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A device for attaching and detaching the bulbs of electric lamps, consisting of a rotatable handle, a suitable grasp or holder for engaging with the bulb and connecting with the handle, and a suitable guard extending out from the handle, substantially as and for the purpose set forth.

guard herein 2. A device for attaching and detaching the bulbs of electric lamps, consisting of a rotatable handle provided with a bevel-gear and a bracket, said bracket consisting of a rectangular plate having upturned ends to form double bearings, a grasp or holder provided with a shaft having a bevel-gear thereon, said shaft having its bearings in both the upturned ends of the bracket and removable therefrom, substantially as and for the purpose specified.

3. A device for attaching and detaching the bulbs of electric lamps, consisting of a rotatable handle and a grasp or holder adapted for engagement with the bulb and connecting with the handle, and an adjustable and removable springguard extending out from said handle, substantially as and for the purpose specified.

4. A device for attaching and detaching the bulbs of electric lamps, consisting of a rotatable handle, a suitable bracket upon the end thereof, a removable and rotatable shaft supported by said bracket, a flanged bearingsleeve and support upon the end of the shaft, a bevel-gear connecting with the sleeve and support and adapted to engage with a similar gear on the handle, a suitable grasp or holder for engaging with the bulb connected to the end of the shaft, and an adjustable springguard extending out from the handle, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

CHARLES G. EDWARDS.

Witnesses:

W. E. TODD, B. M. LATHAM.