US115822A - Improvement in sash-holders - Google Patents

Description

lmprovern'en Sash ,Holdersi Praented )une 1-3, 18.71.

No. H5322,

UNITED 'r'r DAVID N. B. COFFIN, JR., 0F NEWTON, MASSACHUSETTS.

lMPRCVEMENT IN SASH-HOLDERS.

Specification forming part of Letters Patent No. 115,822, dated June l13, 1871.

Nature and Objects of the Intention.

Description of the Accompanying Drawing.

Figure l is a front elevation, showing parts of the window-sash and fastening. Fig. 2 is a perspective view of a part of the windowsash, prepared with suitable mortise and hole for the screw, ready to receive the fastening. Fig. 3 is an elevation of the sash, showing an edge view of sash and fastening, excepty that the friction-plate c is removed to show the spring b, nut c, and socket d. Fig. 4 is a view from beneath of the sash, its guiding-groove or frame d, and the fastening. Fig. 5 shows one of the various kinds of springs which may be used, viz., a coiled-wire spring of metal.v

Fig. 6 shows a rubber or other gum spring. Fig. 7 shows the adjusting-screw, the lower end of which is tted to receive and be operated by a key. Fig. 8 shows the metallic socket d, which receives the spring, and guides the nut c, screw e, and friction-plate a.. Fig. 9 shows the friction-plate a.

General Description.

A mortise is formed in the side or edge of the sash, as shown in Fig. 2, to receive the metallic socket d when the metallic socket is to be used; it, however, is not indispensable,

as, if the wood is hollowed to the same form,

it will answer the purpose. Into the socket d, oi' wood or metal, is tted the ictionplate a, which has two friction-surfaces, one "to bear at f and one at g. (See Fig. 4.) vInto the socket, at one end, is placed the nut c ot' screw e; in the remaining space is placed the spring l).

A hole is bored, as at h, (see Fig. 2,) large enough to receive a key at the outer end and to receive screw efbetween that and the socket d. The screw is entered through this hole into the nut c, passing within the spring b.

vThe friction-plate a. is then adjusted to cover the parts, and, being embraced between the end shoulders j of the socket, is placed, with the sash, in its groove, as shown at Fig. 4.'

The spring b, or its substitute, presses the tric tion a. against the sash-guide or groove at g, Fig. et, and with a less force, proportioned to the wearing-surface at f, as but a portion of the spring bears on the narrower flange k of the friction-plate.

, When it is required to increase or diminish the friction of plate cin the sashguiding groove, the screw is turned to the right or left, as the occasion requires, so compressing or allowing the spring to coil lengthwise, so increasing or diminishing its lateral pressure, and increasing or diminishing its 4action on the frictionplate. The screw is operated by raising the window, when necessary, and applying a key to the end l fitted to receive a key. The key should be in the keeping of the conductor or otherlperson in charge of the car or vehicle to which the improvement is applied. The parts may be made of the materials ordinarily used in the art, such as iron, steel, (galvanized or otherwise,) brass, composition, Ste. Anut may be used at each end of the spring, if preferred, either with differential or right-and-left-handed screw-threads, for compressing and relieving the spring. y

v.lo make the mortise in the sash of uniform shape, the socket-piece may be cast with the wings on, as shown atm in dotted lines in Fig. 8; or these may be left oft' and the wood cut away, only, as shown at the left of Fig. 2, the opposite side of the socket-piece at each end being taken off, as indicated by dotted lines at n, Fig. 8, so making the niortise of nniform shape and more easily made.

Any spring which, by the longitudinal screw and its nut, may be subjected to more or less tension laterally, or may be made to exert more or less pressure laterally against the frictionplate, may be used as a substitute for the rubber or'gum spring b. Also, gains may be cut 2.' The arrangement of the accessible part er head of the adjustingscrew of a frctional sash 01' Window supporter Within or beneath. the

' lower rail.

s DAVID N. B; COFFIN, JR.

at both ends of the mortise, and the metallic socket furnished with tongues to t, as indcated iu dotted lines in Figs. 2 and 8.

I claim'- 1. The combination of the laterally-acting spring and friction-plate with the adjusting` l Witnesses: screw and sash-guiding groove, substantially as described.

LYsANDER BURNETT, O. E. HoDsDON.

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