US108778A - Improvement in sash-fasteners - Google Patents

Description

aan site Tertre effet WILLIAM GORMAILOF .NEW BRITAIN, CONNECTICUT, ASSIGNOR TC RUS- SELL & ERWIN MANUFACTURING COMPANY.

l Letters vPatent No. 108,778, dated November l, 1870.

The Schedule referred to in these Letters Patent: and making of the same.

To all whom it 'may concern:

Be it known that I, WILLIAM Gontran, of New Britain, in the county of Hartford and State of Connecticut, have invented a n ew and useful Improvement in Sash-Fasteners; and I do hereby declare that the following specification, taken in connection with the drawing making a part of .the same, is a full, clear, and exact description thereof.

Figure 1 is a side elevation.

Figure 2 is a top view.

Figure 3. represents a spring washer used in connection with the bar C.

vFigure 4 represents, in cross verticalv section, the plateA, bar C, washer D, and head E.

The invention resides in constructing the plates of a sash-fastener, which are respectively attached to the upper and lower sashes of a window, with a corresponding longitudinal lip on each plate, in order to e'ectually prevent the insertion of a knife-blade or other tool prepared for the purpose between the two sashes from the outside of the window to unlock the fastening; and also in the employment of aifadjustable friction-spring washer, in combination with the cross-bar, not only to enable such bar to beheld at any desired position, but to admit of increased friction of the spring upon the bar from time to time, as the spring is worn or weakened by use. v A sashfastener has heretofore generally been couvstructed with two' plates, A and B, which arc respectively secured by screws to the sashes; the one to the top surface of the lower rail of the upper sash, and the other to thetop surface of the upper rail ofthe lower sash, and so located that when both sashes are -elosed the two plates will have their two contiguous edges abut and ltheir top surfaces be in the same plane.

A bar, O, is pivoted to the plate of theupper sash, usually with a notch, c, upon its under edge, and a segmental curved ange, b, is fastened4 to the plate ot' the lwersash, with which liange'the notch-chin` the bar engages when the bar isvplaced crosswise of the sash, and thus clamps the two sashes so they will not rattle, and'also prevents the windowfrom being opened until the bar is folded -back.

I am also aware that sash-holders have been made in'whicha project-ion in the inside plate is made to enter vertically a recess on the outside plate, and that by such arrangement it is difficult to operate the 'bar from the outside. It is only necessary, however, that be inserted from thc outside of the window to oper- 'ate upon the bar C, although the intruder may have out away the wooden lip of the sash itself.

For the purpose f holding the bar C at any position at which it may chance to have been left without liability of'sp'ringing back and unfastening the window, and also to admit of A'an' adjustrlnent .ot' the friction from time to time, I make use of a spring-washer, D, fig. 3, of about three-e`ighths of an. inch diameter, which i' consistsA simply of a thin plate ot` spring-steel struck up dish-shaped and punched with a central hole to fit the square part of the joint-pin which holds the bar C to the plate A.

The ornamental head-E has a threaded shank,"wlich\ screws into the end ot' the joint-pin, and the spring-v washer being ilattened between vthe under side of the head E and top surface of the bar C exerts aconstant pressure upon the bar to eect the purpose intended.

Lam aware that a spring has heretofore been used i for the same object,`in combination with the bar of a sasl1-tstener,ancl I therefore do not include broadly, as of my invention, thc application of a -spring for such purpose, but only that improvement which results from the use of'a spring of the character as shown and applied to the sash-fastener bar, in combination with these'rew E, asdescribed, the same being economical in construction and eliicient for'the purpose intended. y

What I claim as my invention, and desire vto secure by Letters Patent, is--I 1. 'lhe plates A and B of a window-sash fastener, provided'with the corresponding longitudinal lips c, as and for the purposes' specified.

2. In combination with the Abar and plates of a window-sash fastener, the spring-washer C and adjusting head E, as and for the purposes specified.

' WILLIAM GOB-MAN.

`Witnesses:

EMERY PARKER, LEONARD Dore.

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