US1016916A

US1016916A - Jointing metal sash-bars.

Info

Publication number: US1016916A
Application number: US63476311A
Authority: US
Inventors: Francis Henry Crittall
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-06-22
Filing date: 1911-06-22
Publication date: 1912-02-06
Anticipated expiration: 1929-02-06

Description

F. CRITTALL.

JOINTING METAL SASH BARS.

APPLICATION FILED JUNE22, 1911.

1,016,916, Patented Feh'6, 1912.

our.

FRANCIS HENRY CRIT'TALL, or BRAINTREE, ENGLAND.

STATES PATEN J OINTING META-L SASH-BARS.

1 ,O16,916 Specification of Letters Patent. Patented F b 6 1912 Application filed June 22, 1911. Serial No. 634,763.

To all whom it may concern. I the flange and the web of the other bar, the Be it known that I, FRANCIS HENRY Cnrrweb of each bar having a rectangular slot TALL, a subject of the King of Great Britain, cut in it to receive the uncut portion of the residing at Manor Works, Braintree, in the web of the other bar, suchwebs being other- 55 county of Essex, England, have invented wise uncut and having their metal otherwise new and useful Improvements in Jointing undisturbed, substantially as described. Metal Sash-Bars, of which the following is 2. The process of preparing a T section a specification. bar forjointing with a bar of equal size con- This invention relates to jointing T secsisting in first separating the flange of the 60 tion metal sash bars and is particularly apbar from the web by a slit then enlarging the plicable to jointing bars of equal size. slit by bending the flange away from the In a joint made according to this invenweb thus stretching it, next further enlarg tion the flange of one bar lies between the ing the width and length of the slit and flange and the web of the other bar while lastly cutting a rectangular slot in the web 65 the web of each bar has a rectangular slot substantially as described.

cut in it to receive the uncut portion of the 3. A joint between two crossed T-section web of the other bar as has before been prosash bars of equal cross-section in which the posed but the webs are not otherwise slit or flange of one bar lies between the flange and deformed in any other way. web of the other bar, the web of each bar 70 In the drawings Figures 1, 2, 3, and 4. having a rectangular slot cut in it to receive show in elevation the steps in preparing one the uncut portion of the web of the other of. the bars for the joint. Fig. 5 shows in bar, such webs being otherwise uncut and elevation the other bar for the joint. Fig. having their metal otherwise undisturbed. 6 is an elevation in section showing the 4.. The process of forming ajoint between 75v joint, and Fig. 7 is a plan view of the joint. two T-section sash bars of equal size which The drawings show two T section bars A consists in first separating the flange of one and B of equal size. In making a joint the bar from its web by a slit, then enlarging the web a of the bar A is first separated from its slit by bending the flange away from the flange a by a slit a as shown at Fig. 1. web thus stretchingit, then further enlarg- 80 The slit (1 is then opened and the flange a ing the width and length of the slit, then stretched by means of a wedge-shaped punch cutting a rectangular slot in the web, next as shown at Fig. 2. The slit a is next furinserting another bar crosswise in the openther enlarged and lengthened as shown at ing made in the first mentioned bar and then Fig. 3. This can be done by pressing the closing the bent flange of the first mentioned 85 flange a downward which tears it away bar down upon the flange of the second bar. from the web a. Lastly the web-a has a rec- 5. The process of forming a joint between tangular slot a cut in it as shown at Fig.4. two T-section sash bars of equal size, which The bar B has a rectangular slot 79 out in its consists in first separating the flange of one web I) as shown at Fig. 5. The bar B is then bar from its web by a slit, then enlarging the 90 threaded through the hole in the bar A, the slit by bending the flange away from the space between the top of the slot a and the web to thus stretch the flange, then cutting a top of the bent flange a (Fig. 4:) being sufrectangular slot in the web, next inserting ficient to allow of this. The slots a and If another slotted bar crosswise in the opening are then caused to engage with each other made in the first mentioned bar, and then 95 and the flange a is pressed back so as to closing the bent flange of the first mentioiied closely embrace the flange 7. o'f the bar B bar down upon the flange'of the second bar.

and to close up the ends of the slit a as 6. joint between two T section sash shown in section and plan at Figs. 6 and 7 bars in which the flange of one bar is sepa- What I claim is zrated from its web by a space occupied by 100 i. A joint between two section sash bars the ,flange of the other bar and at each side in which the flange of one bar lies between of this space the flange of the first bar being Webs being otherwise uncut and undisturbed.

FRANCIS HENRY CRITTALL Witnesses:

J OHN H. WHITEHEAD, H. D. JAMESON.

separated from its Web by a narrow slit, the Web of each bar having a rectangular slot cut in it to receive the uncut portion of the Web of the other bar, such Webs being otherwise uncut and undisturbed.

7. A joint between two T section sash bars of equalcross section in which the flange of one bar is separated from its Web by a space occupied by a flange of the other bar and at each side of this space the flange Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.