US1222587A - Raker-gage. - Google Patents

Description

H. ALANSON.

RAKER GAGE.

APPLICATION FILED IIIAY 4. I9I6.

l g' Patented Apr. 1'?, 1917.

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WTED STATES PATENT @Fh HOPE ALANSON, F ABBOTSFQRD, BRITISH COLUMBIA, CANADA.

BAKER-GAGE.

Leashes.

Application filed May 4, 1916.

To all whom t may concern:

Be it known that l, Horn ALANsoN, a subject of the King of Great Britain, and aresident of the town of Abbotsford, in the Province of British Columbia, Canada, have invented certain new and useful Improvements in Baker-Gages, of which the followig is a specification.

My invention relates to improvements in raker gages, with particular reference to raker gages having straight edges faced with glass, and the object of my invention is to devise a simple and inexpensive means of securing the glass faces to the straight edge, the use of which insures that the faces are alwajf's in alinement, prevents the glass from falling off, and enables anew glass to be fitted in place of a broken or damaged one.

l attain this object by the means illustrated in the accompanying drawings in which- Figure l is a side view of a. typical raker showing the practical application of my device thereto.

Fig. 2 is a longitudinal sectional view of my device, assembled in place.

Fig. 3 is an enlarged view, in part section, of the device.

Fig. l is an end view of Fig. 3.

Fig. is a view looking on the glass face.

Fig. 6 is a cross sectional view taken on the line Ct-Z) of Fig. 2m

Similar figures of reference indicate similar parts throughout the several views.

l indicates a. raker gage of a type in common use, the straight edge 2 of which is faced, on its lower side with glass. This glass face is made in two portions, these portions being disposed one on each side of the opening 3, and, at present, are fastened in place to the straight edge 2 by cement or other like securing medium. With this construction, however, it is found that, in some gages, the glass faces on the opposite sides of the opening 3 are not true with each other at all points on account of the glass varying in thickness, so that the glass face is useless as a true straight edge. Further, the glass is apt to fall oft if the cement becomes softened or otherwise loses its tenacity, and also, should one or other of the glass faces break or become damaged, it is diicult to re lace it, and thus the gage is rendered use ess.

l overcome these defects by the construction shown in Figs. 3, 4: and 5, in which Patented Apr.. ilf', 19117.

Serial No. 95,399.

l indicates a metal casing formed as shown. more particularly in Fig. 1l, that is, having a flat portion 5 bent downwardly to form two sides 6 and 7, the edges of which sides are bent inwardly to form flanges 8 and 9. the extreme ends of which flanges are turned upwardly, as at l0 and ll respectively. 12 indicates a strip of glass disposed within the casing and resting on the flanges 8 and 9, which glass is normally held against longitudinal movement by the upturned ends l0 and l1N of the flanges, as shown in Fig. 3. A spring 13 is provided to keep the glass firmly pressed against the flanges, the back of the spring bearing on the flat portion 5 of the casing and its ends bearing on the back of the glass. The casing l is openended, so that a broken or damaged glass may be withdrawn and a new one put in its place.

In the practical application of my invention twosuch devices as just described are used, these being disposed one on each side of the opening 3 of the gage, as shown in Fig. l, and secured to the underside of the straight edge 2 by means of rivets lil, or other suitable means, as shown in Figs. 2 and 6.

It will now be seen that the glasses 12 will form a true face for the straight edge, that they cannot fall ofl" from the gage and that a broken or damaged glass may be easily removed and as easily replaced by a new one.

`What I claim as my invention is:

l. The combination with the straight edge of a raker gage, of a casing open at the bottom, and a strip supported wholly within the casing and unsecured thereto, said strip forming a bottom for the casing.

2. The combination with the straight edge of a raker gage, of a casing open at both ends and at the bottom, a strip removably mounted within the casing and inclosed thereby and forming a bottom for the same, and means within the casing for maintaining said strip in place.

3. A device of the class described, comprising a casing open at the bottom, said casing having the lower edges of its sides turned inwardly to form flanges, a glass strip mounted in said casing and resting on said flanges, and a spring within said casing disposed to bear on the said strip.

4. A device of the class described, comprising a casing open at the ends and at the bottom, said casing having the lower edges of its sides turned inwardly to form flanges, ay glass strip mounted in said VCasing and resting on said fianges, means for preventing inadvertent longitudinal movement of said strip, and means within said casing for maintaining the strip in detachable engagement with the said flanges.

5. A device of the class described, comprising av easing open at the ends and at the bottom, said easing having the lower edges of its sides turned inwardly to form ianges and the extremities of said flanges turned upwardly, a glass strip resting on the said flanges between the upturned ends thereof, and spring means within said easing for maintaining the said glass strip in place.

6. The combination with a. glass straight edge of a raler gage, of means for holding the glass straight edge clear of the raker gage, and resilient means for holding the glass in position within the supporting means.-

Dated at the town of Abbotsford, B. C., this 20th day of April 1916.

HOPE ALANSON.

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

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