US1114026A - Concealed hinge. - Google Patents

Description

G. B. PARSONS. GONGEALED HINGE.

APPLICATION FILED Puts, 1914.

1,1 14,026, Patented Oct. 20, 1914.

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CARL B. PARSONS, 0F DETROIT, MIGI-IIGANZ.

CONCEALED HINGE.

Specification of Letters Patent. Patgnted Oct, 20, 1914, Application filed February 5, 1914. Serial No. 816,671. a

3/100ths of an inch, so that the box-like mortise housing 2' will not require much cutting fromthe door post so as to Weaken that member. However, the upper and lower plates 9 and it would be so thin as to be of no support to the screws that fasten the pin-carrying element p to the mortise casing. I, therefore, provide a pair of blocks 7' one of which is attached to the upper and one to the lower plate by welding so that these become an integral part of the mortise casing.

The upper and lower part of the mortise casing may now be applied to the door post by driving wood screws through the screw holes is. Above and below these screw holes 70 are located threaded holes Z which re ceive the screws m that pass through the plate portions of the pin-carrying element 7 These screws do not gointo the wood, hence when the mortise casing is once aiiixed to the door post it is rarely necessary to remove it. The door may be easily removed by taking out the screws m and taking out the pin-carrying element 79 with the hinge arm. This particular form of pin-carrying 1 element 79, whether it is stamped, cast, or otherwise manufactured, is peculiarly adapted for use with the mortise casing such as I have shown, for the arrangement of the parts in the pincarrying element 79 is such that no more space is taken in the mortise opening than is absolutely required for the pivoting and the swinging radius of the arms; while the mortise casing constructed of relatively thin metal properly lines the mortise casing without adding materially to the depth of the cut required. This thin mortise lining not only serves to line the mortise opening, but by reason of the welding of the blocks upon the upper and lower plate it allows this element to carry the pin-carrying element, thereby making the pin-carrying element 79 removable without taking out any of the wood screws.

WVhat I claim is:

1. A concealed hinge, comprising a mortise casing consisting of an upper and lower plate of thin metal and a box-like housing of thin metal, also blocks securely fastened to the upper and lower plates by such means as welding, devices for fastenihg the upper and lower plates and the blocks to the door post, a pin-carrying element having theportion carrying a pin fitting into To aZZ whom it may concern:

Be it known that I, CARL B. PARSONS, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Concealed Hinges, and declare the following to bea full, clear, and exact description of the same, such as will. enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to concealed hinges and has for its object a concealed hinge which allows the removal of the door with out taking out the wood screws from the door post, and which at the same time employs a mortise casing of very thin metal so as to avoid a deep cut in the door post.

This invention is also arranged to clamp the turned-in edge of the metal. side panel in place.

Figure 1, is a front elevation of a concealed hinge partly broken away. Fig. 2, is a perspective of the pin-carrying element to which the hinge arm is attached. Fig. 3, is a perspective of the mortise casing. Fig. 2 is shown in relation to Fig. 3 as the structure of Fig. 2 would appear after it has been removed from the structure shown in Fig. 3.

a indicates the face of the door post.

6 represents a portion of the door. To the door the conventional concealed hinge arm is attached. This is pivoted to the pin-carrying element 39 by the pin (Z. This pin-carrying element p is the concealed hinge part that is described and claimed in my previous application No. 794,569, with the exception that the edge which lies toward the outer edge of the door post is rabbeted as at c. This rabbet receives the turnedpver edge of the metal panel 7 and when the pin-carrying element 127 is screwed to the door post it clamps the turned-over edge of the panel securely in place. The pin-carrying element p comprises an upper and a lower plate portion, upper and lower mortise walls, and a connecting strap on the side.

The mortise casing is formed of sheet metal which is drawn by suitable dies to form an upper and lower plate 9 and 7t, respectively, and a box-like housing 2'. This metal is relatively thin, approximately portions of the pin-carrying element securely against the plates of the mortise casing, whereby the rabbeted edge may clamp the turned-in edge of the metal body panel against the plates of the mortise casing.

In testimony whereof, I sign this spccification in the presence of two witnesses.

GAR-L l3. PARSONS.

Witn esses STUART G. BARNES, MARIETTA E. RUDD.

Copies 01 this patent may be obtained for five cents each, Washington, D. C.

by addressing the Commissioner of Patents,

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