US375986A

US375986A - Spring shade-roller

Info

Publication number: US375986A
Authority: US
Publication date: 1888-01-03
Anticipated expiration: 1905-01-03

Description

(No Model.)

G. T. BRiGGS.

SPRING SHADE ROLLER.

Patented Jan. 3, 1888.

VE-[T1 5 5 5 E 5 UNITED STATES PATENT OFFICE.

GEORGE T. BRIGGS, OF GAMBR-IDGEPOBT, MASSACHUSETTS.

SPRING SHADE-ROLLER.

SPECIFICATION forming part of Letters Patent No. 375,986, dated January 3, 1888.

Application filed March 15, 1886. Serial No 195.248. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE T. BRIGGS, a citizen of the United States,residing at Cambridgeport, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Spring Shade-Rollers; and I do declare the following to beafull, clear, andexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to the spindle and step to which the spring is attached, andhas for its object a more perfect and cheaper method of construction.

In the drawings-in which like letters indicate like parts, Figure 1 isacentral longitudinal section, and Fig. 2 details of the same.

ais the roller; 1), itsend plate. cis the metal spindle end, which is driven into the wooden spindle c. c" is the metal ferrule on the end of the. wooden spindle to prevent its splitting. dis the spring, and e is the step for supporting the inner end of the spindle in the usual manner. I

My improvements consist, first, in forming the metal ferrule c with the channel or groove c second, in forming the step e with a similar channel or groove, 6'.

As shown in the drawings, that portion of the metal ferrule c" and step e on which the coils of the spring (1 are expanded is made considerably larger than the internal diameter of said coils when in their normal condition, but are made tapering, so said coils will freely enter thereon. The channel or groove in the ferrule and step is made sufficiently deep to allow the end coils of the spring d to contract to their normal diameter.

To attach the ends of the spring to the spindle or step the end coils of the former are pressed-onto the tapering portion of the latter, and by turning said spring in a direction prevent the slipping around thereon of the spring, and the winding up of the latter more tightly bindsthe parts together.

I am aware of the reissued patent to Hartshorne, No. 7,370, and of patents to Beiersdorf and Bunker, No. 214,871; to Bryant, No. 298,824, and to Eddy, No. 310,658, and do not make any claim to the construction and combination of parts shown therein; but

What I claim as my invention is- 1. In aspring shade-roller, the combination, with the spindle and the coiled spring encircling said spindle, of the tapering metal ferrule 0, secured to the spindle and having an annular groove or channel, 0 intermediate its ends to receive one end of the coiled spring, substantially as described.

2. In a spring shaderollcr, the combination of the spindle c, the spindle-step e, having a tapering end and an annular groove, 6, the tapering metallic ferrule c", secured to the spindle and provided with an annular groove, 0 and the coiled spring'd, encircling the spindle and having its ends engaged in the annular grooves of the step and ferrule, substantially as described.

3. In a spring shade-roller, the combination, with'the spindle and the coiled spring encircling said spindle, of the spindlestep e, having a tapering end and an annular groove, 6',

to receive one end of the coiled spring, sub

stantial] y as described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE T. BRIGGS. \Vitnesses:

THOMAS OoLEY, WILLIAM ALLEN.