US1025688A - Manufacture of metal casements. - Google Patents

Description

F. H. ORITTALL. MANUFACTURE OF METAL GASEMENTS.

APPLICATION TILED JUNE 22, 1911.

1,025,688. Patented May 7, 1912.

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UNITED sTA Js PATENT OFFICE.

FRANCIS HENRY CRITTALL, 0F BRAINTREE, ENGLAND.

MANUFACTURE OF METAL GASEME NTS.

To all whom it may concern:

Be it known that I, FRANCIS HENRY CRIT- TALL, a subject of the King of Great Britain, residing at Manor Works, Braintree, in the county of Essex, England, have invented new and useful Improvements in the Manufacture of Metal Casements, of which the following is a specification.

The frames of centrally pivoted metal easements have heretofore usually been made either by joining metal plates to continuous bars of suitable section or else by joining together bars of diflerent sect-ions.

'According to this invention the frames of metal casements are made by cutting away metal from continuous bars. It 1s preferred to employ a special section of bar whereby a double joint or closure is obtained throughout.

Figure 1 shows a section of this bar from which the whole of the easement shown in perspective at Fig. 2 is made. In the latter figure a is the fixed frame of the easement and b the pivoted or moving frame. Figs. 3 to 10 are sections on the lines 33 to 1010, Fig. 2, to a larger scale than Fig. 2, but to the same scale as Fig. 1. These sections show the casement closed, whereas in Fig. 2 it is open, so that in each case the plane of section is indicated both on the part a and the part b. In Fig. 1 different portions of the bar are marked 1 to 5, while in Figs. 3 to 10 the corresponding parts arev marked a to a or b to b as the case may be, so as to show clearly which parts of the bar Fig. l have been cut away in the different places. Figs. 11 and 12 are sections on the lines 1111 and 12--12, Figs. 9 and 10. In Figs. 3, 4 and 5, the part 4 of the bar a has been cut away and the parts 2 and 5 of the bar 6. In Figs. 6, 7 and 8 the part 5 of the bar a has been cut away and the parts 2 and 4 of the bar 6. In Figs. 9 and 10 the part 5 of the bar a and half of the part 4 have been cut away and parts 2 and 5 and half part 4 of the bars I), 0 and (Z.

Figs. 2, 11 and 12 indicate the points at which half the parts a and 6* respectively begin to be cut away. The drawings do not show the pivots which may be of any ordinary description. The junctions of the bars at the four corners of each frame Specification of Letters Patent.

Application filed June 22, 1911.

Patented May 7, 1912.

Serial No. 634,764.

are welded or brazed in the ordinary manner.

It will be observed that the sides of the fiXed frame of the casement are formed from the blank shown in Fig. 1 by cutting away entirely one of the flanges 4 or 5. One side of the pivoted member of the casement is formed by cutting away entirely one of the flanges 2 or 3 and one of the flanges 4 or 5 on the same edge of the bar and the other side of the pivoted member is formed by cutting away one of the flanges 4 or 5 at one edge of the bar and one of the flanges 2 or 3 at the opposite edge thereof. To produce either of the top or bottom bars of the fixed or pivoted member of the casement the front flange 4 or 5 is cut away from one end of the .bar toward the opposite end thereof leaving a portion standing and then cutting away that part of the rear flange (4 or 5) in rear of the remaining or standing portion of the front flange and also an additional portion thereof to leave a clear space for the two members to cross when open or to assume a parallel position when the casement is closed. The bars con structed in the manner above specified may be assembled in the usual way, and readily pivoted together to produce a casement having double weathering.

What I claim is 1. The process herein described of manufacturing the side bars of the fixed and pivoted members of a casement which consists in forming a bar on its longitudinal edges with parallel flanges projecting from one side of the bar and with longitudinal parallel flanges on its opposite side more widely separated than those first mentioned, cutting from the bar one of the first mentioned flanges to form the two sides of the fixed member of the casement, cutting from a similar bar both flanges on one longitudinal edge of the bar to form one side of the pivotal member of the casement and cutting from a like bar one of the flanges at one edge of the bar and an unlike flange at the opposite edge thereof to form the other side of the pivoted member of the casement.

2. The process herein described of manufacturing the. top and bottom bars of the fixed and pivoted members of a casement,

also an additional portion thereof to pro- Whioh consists in forming a bar on its 'londuce an unflanged portion in the bar inter- L0 gitudinal edges with parallel front and rear flanges projecting from one side of the bar, mediate its opposite ends.

cuttin away the front flange from one end T 7 r of the bar toward the opposite end thereof FRANCIS HEB R1 CRI 1V1 and then cutting away that portion of the \Vitnesses:

rear flange in rear of the remaining or J OHN H. THITEHEAD, standing portion of the front flange and H. D. JAMESON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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