US845772A - Window-sash lock. - Google Patents

Description

PATENTED MAR. 5. 1907.

M. H. GABA. WINDOW SASH LOOK.

APPLICATION FILED JULY 25, 1906 2 SHEETS-SHEET l.

PATENTED MAR. 5. 1907.

M. H. GABA. v I WIN-DOWSASH LOOK.

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UNITE STATES FATE T OFFIQE.

WlNDOW-SASH LOCK.

Specification of Letters Patent.

'ratenteu Maren 5, 1907.

Application filed July 25, 1906. Serial No. 327,604.

To (tZZ whom it nearly concern:

Be it known that I, MELVIN H. GABA, a

citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Window-Sash Locks; and I do declare the following to be a full, clear, and exact 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.

This invention relates to new and useful improvements in window-sash locks, and possesses the new and useful structural features set forth in the accompanying drawings and described in the annexed specification and claims.

Among the essential features of the invention are a slidable frame carrying a block with a toothed face, with means for simultaneously moving said frame and block downwardly and outwardly in lowering the window-sash.

Sheet 1 of the drawings illustrates my improvements as applicable to a railwaycar window. Sheet 2 illustrates the same as ap plicable to a house-window, the modification being slight in either case.

Figure 1 is an inner front view of the corner of a railwaycar Window, showing my improved sash-lock in position, the sash being in its lowest position and locked. Fig. 2 is a view similar to Fig. 1, with the lock-casing in section to disclose the lock devices. Fig. 3 is a sectional view on the line V V of Fig. 2. Fig. 4 is a sectional view on the line I I of Fig. 2. Fig. 5 is a front elevation of one side of a window, partly in section and showing my improvements applied to a house-window. Fig. 6 is a sectional view on the line Y Y of Fig. 7. Fig. 7 is a sectional view on the line X X of Fig. 5. .Fig. 8 is a detached perspective view of the toothed block-supporting frame of the lock devices shown in Fig. 2. Fig. 9 is a similar view of the toothed block-supporting frame slightly modified as shown in Fig. 5. Fig. 10 is a detached bottom plan view of the lock-casing as shown in Fig. 2. 11 is a detail sectional view on the line a a of Fig. 2.

In a detaildescription of the invention similar reference characters indicate corresponding parts.

Referring to the drawings on Sheet 1, these illustrate, as before stated, my improved sash lock or fastener applied to a car-window, 3 indicating the window-frame, 2 the window-sill, and 1 the window-sash. Mortised in the inner side of strip 4, which is secured to the frame 3, is a toothed bar 7, which is secured in place by screws penetrating the extreme ends of said bar.

Secured to the inner side of the sash 1, adjacent to one of the lower corners of said sash, is an inclined metallic bar 8, the extreme ends of which are secured to the sash by screws 8. This inclined bar 8 is placed in a suitable recess in the sash, (see Fig. 4,) and between said incline bar 8 and the toothed bar 7 on the window-frame strip 4 there is a toothed block bar 5, one side of which is tapered, as at 5, to match the inclination of the bar 8, and the other side of which is provided with ratchet-teeth 5", Which engage the teeth of the bar 7. The contact of the bar 8 and the block 5 is such as to maintain a proper engagement between the teeth when the sash 1 is raised. The shape of the teeth on these parts is such as to allow the window-sash to be elevated without any interference from the teeth and to pre ent the window-sash from being lowered unless a disengagement of said teeth is first effected.

The triangular bar 5 is carried on an arm 17, which projects from a frame 15, having an upright extension 14, terminating in a head 14, the whole being otherwise termed a sliding frame. This frame is inclosed within the lock-casing 6, which is secured to the inner side of the window-sash 1 near one corner thereof, said lock-casing having a suitable opening to permit of the arm 17 extending therethrough to support the toothed block 5. Projecting from the bottom of said frame are two guide- pins 16 and 16, which pass through openings in the bottom of the lock-casing 6. The opening 16, through which the guide-pin 16 passes, is essentially oblong to permit of some lateral movement of the pin 16 for a purpose hereinafter specified. On the interior of the lock-casing there is a two-arm spring 13, one arm of which engages the undcr side, of the head 14 of the sliding frame 15 and holds said frame, to gether with the toothed block 5, in an upper position, as shown in Fig. 2. This is the normal position of the frame and toothed block 5.

1O designates a cam-latch, which is pivoted IIO within the lock-casing 6 at 11 and is nor mally held in an upper position by one arm of the spring 13 engaging a pin 11 on a side of said cam-latch, as shown in Fig. 2.

Projecting from an end of the cam-latch 10 is a bolt 12, which passes through a suitable opening in the lock-casing and normally lies below a stop 18, which is on the windowframe strip 4 at a suitable point near the lower end of said window-frame, as shown in Fig. 1. The bolt 12 and stop 18 provide a lock to secure the window-sash in its lower position, so that it cannot be raised from the outside of the window. The inner end of the cam-latch 10 has a finger-piece 21, which projects through a suitable opening in the casing 6 and is pressed downwardly by the fingers to remove the bolt 12 in raising the window-sash. In thus pressing downwardly the inner end of the latch 10 the fingers engage a stationary projection 22, extending from the lock-casing. The lower side of the latch 10 has a cam-surface 23, which engages the horizontal portion of the frame 15 and lowers the ratchet-bar 5, together with the frame, when the latch is pressed downwardly. The bolt 12 and the supporting-frame 15 are thus simultaneously moved when said latch 10 is pressed downwardly by the fingers. In this movement of the cam-latch 10 the bolt 12 is moved out of the path of the locking projection 18, and the toothed block 5 is lowered on the incline 8 to free the teeth 5 from the stationary toothed bar 7 and to permit the sash to be raised. After this the camlatch 10 is released and the toothed block 5 moves up the incline 8 to rengage the toothed bar 7, and the sash is held in its raised position by said teeth being maintained in such position by the incline 8.

It will be understood that the lengths of the toothed block 5 and the bar 7, also the inclined bar 8, are sufficient to permit the win dow-sash to be raised and held at the desired height. In pressing down upon the latch 10 to separate the toothed block 5 and toothed bar 7 it will be understood that the block 5 must have sufficient downward and outward movement to allow it to disengage the bar 7. This movement of the block 5 from the toothed block 7 at the same time that the said block 5 is moved downwardly is accomplished by the cam-surface 23 of the latch 10 and a corresponding tapered surface of the frame 15, which is engaged by the latch. ,These are illustrated in Fig. 11, where it will be understood that owing to the surfaces of these parts the frame 1 5, carrying the ratchetblock 5, will have some outward movement during the depression of said frame. This renders necessary the elongated opening 16, hereinbefore referred to, in the bottom of the lock-casing 6 (shown in Fig. 10) in order that the pin 16 may have suflicient lateral movement. The guide-pin 16 acts as a pivot for this movement of the frame 15 and block 5. The extent of such movement is sufficient to disengage the ratchets.

It Will be understood that the incline 8 permits the block 5 to move away from the bar 7 because at the same time the block 5 is moving downwardly. lhe construction of the lock devices shown in Fig. 5 for the purposes of a house-window is attended with the following modifications: 'l'he bolt 12 is on the end of a pin 9, which works through suitable openings in the casing 6 and has a portion of its body surrounded by a helical spring 9 to press it outwardly. The middle portion of said bolt has a rigid collar 24, which is engaged by a nose 25 of the latch 10 to draw back said bolt. The latch 10 in all other respects is substantially the same as that shown in Fig. 2. The bolt 12 may enter any of a series of holes 26 in the windowframe 3. These holes take the place of the stop 18 in the other modification. (Shown in Fig. 1.) In this construction the lock-casin 6 is mortised in the window-sash, so that al portions of the device are concealed from view with the exception of the projecting end 21 of the latch 10. In depressing the latch 10 the nose 25 thereof draws the bolt 12 outwardly against the tension of the spring 9" by engaging the collar 24. Also in this modified construction the incline bar 8 is mortised in the window-sash and is attached to a plate 27 which is screwed to the window-sash. This plate 27 has an opening 26 for the bolt 12 and in which the bolt enters in looking the Window-sash in its lowered position.

I claim 1. In a window-sash look, a frame sup porting a toothed block carried upon the window-sash, a stationary inclined bar inclosing said toothed block, a stationary toothed barv with which the toothed block is made to engage by the inclined bar when the sash is moved upwardly, and a cam-latch engaging said frame to move the toothed block downwardly and laterally simultaneously to effect a disengagement between said toothed block and said toothed bar in lowering the window-sash.

2. In a window-sash look, a slidable frame carrying a wedge-shape toothed block, and guide-pins projected from said frame, a latch engaging said frame to move it downwardly, means for maintaining the frame and toothed block in their upper positions when released by the latch, a bolt projecting from said latch, an inclined bar upon the window-sash engaging the smooth surface of the toothed block, a toothed bar on the window-frame engaging the toothed block, and means on the window-frame to interlock with the bolt on the latch.

3. In awindow-sash look, aslidable frame, block when said block is moved upwardly lo a block supported thereon having teeth on against the inclined bar. one side and a smooth surface on the other, a In testimony whereof I afiiX my signature gamiiageh adapged to 511love salid frame and in presence of two witnesses.

oo ownwar y an atera y simu taneously, an incline bar secured to the window- MELVIN GABA' sash and inolosing said block, and a station- Witnesses ary toothed bar fixed to the Window-frame R. J. MoCARTY, and adapted to engage with the teeth on the C. M. THEOBOLD.

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