US673729A - Sash-holder. - Google Patents

Description

No. 673,729. Patented May 7, l90l. m. SE IAN. SASH ER.

(Application filed Nov. 2 1900.)

V UNITED STATES PATENT FFICE.

MARTIN SEBASTIAN, OF GRAZ, AUSTRIA-HUNGARY.

-- SASH-HOL'DER;

SPECIFICATION formingpart of Letters Patent No. 673,729, dated May 7, 1901.

Application filed November 2, 1900. berial No. 35,284. LNQ model.)

To all whom, it may concern:

Be it known that I, MARTIN SEBASTIAN, a subject of the Emporcr of Austria-Hungary, residing at Graz, in the Province of Styria, in the Empire of Austria-Hungary, have invented certain new and useful Improvements in Sash-Holders or Similar Locking Devices; and I do hereby 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 drawing, and to letters of reference marked thereon, which form a part of this specification.

' The object of the present invention is an automatic releasable locking device for objects which are running in fixed guides and which are standing under the action of a force of a constant direction. The locking device may be used for various purposesas, for instance, as a sash-holder or for adjusting artists canvas -frames or blackboards on easels or similar supports provided with suitable guide-grooves for the frame or blackboard, whose weight acts on the locking device to lock the parts together-or the device can be used in show-cases wherein the sash or door is slidable vertically in the case-framing. This locking device or catch consists, essentially, of a wedge'shaped body provided with a cushion made of elastic material, said wedge-shaped body being arranged within a wedge-shaped recess of the guide or of the object itself. In this manner when the object is displaced in the direction of the force constantly acting upon the same the said wedge is clamped between the object and its guide, whereby the object is held fast and its further movement arrested. However, the movement of the object in the opposite direction is not prevented.

The drawing shows, by way of example, a form of practical execution of this invention-as, for instance, a show-case in which the sash or door is vertically slidable and the button it is located in the framing of the top of said case.

a is the object, which, owing to the guides b 0, can move only up and down. In a recess of the guide b is arranged a wedge d, formed of angle-iron, having one flange vertical and the other horizontal, which is provided on its side turned toward the object ctz'. e., on the vertical fiangewith a cushion e, made of india-rubber or of some other elastic material, and on the opposite side with inclined surfacesf, said inclined surfaces being bevels on the ends of the flanges of the angle-iron, said wedge being constantly pressed downward by the action of its own weight or of some positive force-for instance, a spring The object a can always be moved upward.

If the object a is left to itself, it descends by reason of its own weight and carries along with it the wedge d. This latter slides during its descent with its slanting surface f along the inclined surface g of the recess in the guide I) and is then clamped between this guide and the object.

The wedge 01 can be raised by means of a lever t', provided with a knob 71.. A springj, acting upon the lever t', constantly tends to press the wedge d downward. The drawing shows the position of the parts when the stopping device is released.

The stopping-wedge and the recess intended for the reception of the same may also be arranged within the movable object itself instead of being arranged in the guiding parts, as shown.

Similarlocking devices, in which the wedge is arranged within or on the guiding part, may be employed in connection with windowsash,sliding frames for drawing-tables, grated bedsteads, piano-stools, stands, tables with vertically-movable plates, maximum watergages, cords for windowblinds, and similar articles.

Locking devices with the Wedge arranged on the movable object may be employed in connection with easels, hoists, extension-ladders, and the like.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

The combination with parallel guides and an object slidable between them, one of said guides having a recess with an inclined wall, a wedge in said recess, said wedge comprising an angle-iron the flanges of which are beveled, one face of said wedge parallel with the slidable object and the beveled flanges thereof In testimony that I claim the foregoing as parallel with the inclined wall; of a screwmy invention I have signed my name in preseye adjustable in the flange of said Wedge, enee of two subscribing witnesses.

a pivoted, spring-held lever engaging said MARTIN SEBASTIAN. 5 screw-eye and a pivoted knob on the other Witnesses:

end of said lever, substantially as and for the J OSEF RI'JBURCH,

purpose set forth. ALVEsTO S. HOGUE.

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