US1434476A - Semaphore blade - Google Patents

Description

' W. F. BOSSERT.

SEMAPHORE BLADE.

APPLICATION FILED JUNE 29, 1921. 1,434,476.

Patented Now-7, 1922.

Patented Nov. 7, 1922.

Ul'TED STATES PATENT l FFMZE.

WILLIAM F. BOSSERT, OF U'IICA, NEW YORK.

SEMAPHORE I BLADE.

Application filed June 29 1921. Serial No. 481,229.

The main object of the invention is to.

provide a semaphore blade capable of use and attachment to any usual spectacle, although there is considerable variancein the spaced distance of the boltapertures in the spectacle for receiving the ordinary blade grips or clamps.

The spectacles in general use throughout the country have two di'fi'erent dimensions of drillings for bolt apertures. One dimension specifies 4L-}"x4c1- for the center of the bolt, while the other dimension demands 4"):5", and generally orders received for blades do not specify these particular dimensions. Therefore, considerable time is lost in securing the necessary information before orders can be filled. Further, due to this condition, many mistakes happen in-shipping orders and the manufacturer is compelled to manufacture and keep a duplicate stock of blades on hand in order to fill orders reasonably promptly.

My invention avoids these uncertainties and duphcations ofblades by the provision of a blade which is capable of assemblage and use with spectacles having either dimension of bolt apertures.

A further object relates to the construction of a rigid, light and durable semaphore blade.

Other objects and advantages relate to the details of construction, form and arrangement of the blade. all as will more fully appear from the following description, taken in connection with the accompanying drawings, in which:

Figure 1 is a plan view of a spectacle having a blade of my invention assembled therewith.

Figure 2 is a plan view of a blade separate from the spectacle.

Figure 3 is an edge view of the blade of Figure 2.

Figure 4; is a fragmentary view of the end portion of the blade adapted to be secured to the spectacle.

Figure 5 is a section on line 55, Figure '4.

Figure 6 is a fragmentary view of the other'end of the spectacle.

Figure 7 is a section on line 7-7, Figure 6. p I

The spectacle -1 is of the usual form and arrangement, and is provided with bolt apertures for cooperation with blade grips or clamps, which also extend through apertures in the blade -.2-. In order to provide-a blade capable of universal use in connection, with spectacles having the various dimensions of bolt openings, as above de scribed, the end of the blade adapted to be secured to the spectacle is provided with two pairs of slots, the pair -3- being near one edge of the blade while the pair -4: is near the opposite edge of the blade. Each pair of slots extends outwardly toward the edge of the blade, and the slots of each pair are inclined toward each other as they extend outwardly. The result of this construction is that the blade is capable of assemblage with and securement to spectacles which have their bolt openingsat different spaced distances from each other. These slots 3- and -4 are at exact angles to each other, as shown, the outer lateral extremities o'f theslots'beinn adapted to one standard, as for instance 4"x5, while the inner lateral extremities coincide with the other standard, as 411* 'Xtdz" 'Theblade .2 is formed with a pair of corrugations extending throughout. substantially the entire length of the blade. These corrugations begin at the end adapted to be secured to the spectacle, and are rounded in cross-section, as indicated, being of somewhat semi-circular form, and are positioned near the center of the blade, and between the pairs of slots 3-- and and are spaced apart by a flat portion -5- that is elevated slightly above the edge portions -6 in the completed construction, for the purpose of preventing marring or cracking of the enamel when the blade is secured to the spectacle.

The corrugations .-7- and -.8, as stated, are formed near the middle of the blade at the end adapted. to be secured to the spectacle, and extend in a substantially parallel direction, and substantially parallel with the. longitudinal axis of the blade throughout the said end portion of the same, which is adapted to lie in contact with the spectacle. These corrugations then begins to diverge outwardly and incline away from each other, and toward the opposite edges of the blade, and then extend along the opposite edges of the blade to the opposite end thereof.

As stated, these corrugations at the end adapted to be secured to the spectacle, are substantially of rounded form and are in cross section, and are of material height. This height gradually diminishes and the corrugations flatten out from the point of diversionof the same to the opposite end of the semaphore blade, where the corrugations, as indicated, are somewhat flat at their top portion.

The greatest stifi'ness of the blade is needed just beyond the point of contact of the blade with the, spectacle, and for this reason the outward diversion of the corrugations along curved lines provides the required strength. at this part of the blade. The flattening decrease otthe height of the corrugations as they extend from the end secured to the spectacle tothe opposite end of the blade provides ample stifiness where most needed against wind pressure, and at the same time substantially eliminates any possibility of snow .or ice lodging at the outer portions of the'blade where increased or extra weight will have the most pronounced eifect on the operation of thesame.

The edges of .the blade beyond the point of contact of the end portion ofthe blade with the spectacle are provided with flanges -'9- and -10 extending from the body of the blade in a direction opposite of the extension of the corrugations ,6. and 7, to further strengthen the blade and prevent the same from buckling.

It will be obvious that by this construction. I have produced a blade that is capable of universal use with the different spectacles described, and that thesame is also of an unusually, rigid and durable structure capable of being made of a singl piece of relatively thin sheet metal.

Although I have shownand described a specific construction and form ofblade, as illustrative of a, perhaps preferred embodiment of my invention, I do not desire to limit myself to the details'of construction or form of the same, asvarious changes and modifications maybe. made in each without departing from the invention asset forth in the appended claims.

I claim: a

1. A semaphore blade having at one end a plurality of pairs of slots,.the slots of each .pair being inclined outwardly toward each other.

2. A. semaphore blade having at one end two pairs of slots wholly within the body of the blade, the slots of each pair being inclined outwardly to each other.

A semaphore blade having at one end a plurality of pairs of slots, the slots-of each pair being inclined outwardly toward each other, and a pair of corrugations extending longitudinally throughout substantially the entire length of the blade.

4.. A semaphore blade having at one end two pairs of slots wholly Within the body of the blade, the slots of each pair being inclined outwardly to each other, and a pair of corrugations extending longitudinally throughout substantially the entire length of the blade.

5. A semaphore blade having at one end a pluralityof pairs of slots, the slots of each pair being inclined outwardly toward said corrugations.

6. A semaphore blade having atone end two pairs of slots wholly within the. body of th blade, the slots of each pair being inclined outwardly to eachother, and a pair of corrugations extending longitudinally throughout substantially the entire length of the blade, the edges of the blade being bent to form flanges extending in a direction opposite to the projection of said corrugations. g

7. A semaphore blade having two corrugations extending throughout substantially its entire length, said corrugations beginning at one end and spaced from the opposite edges of the blade, and extending parallel for a portion of the blade, and then diverging outwardly from each other to the opposite edges of the blade and extending along the opposite edges to the opposite end of the blade.

8. A semaphore blade having two corrugations extending throughout substantially its entire length, said corrugations beginning at one end and spaced fromthe opposite edges of the blade, and extending parallel for a portion of the blade. and then diverging outtoward the opposite edges of the blade, and extending along the opposite edges to sub stantially the opposite end of the blade, and flanges extending laterally from the opposite edges of the blade.

10. A semaphore blade having means per- Initting its securement to spectacles having bolt openings varying in spaced dimensions.

11. A semaphore blade having two corrugations extending substantially throughout its entire length, said corrugations beginning at one end and spaced for a portion of their length from the opposite edges of the blade, and diverging outwardly from 15 each other toward the opposite edges of the blade and extending along the opposite edges to substantially the opposite end of the blade, flanges extending laterally from the opposite edges of the blade, and bolt openings upon opposite sides of said corrugations at the end of the blade, Where said corrugations are spaced upon the opposite edges of the blade.

In Witness whereof I have hereunto set my hand this 22d day of June 1921.

lVILLIA M F. BOS'SERT.

\Vitnesses ROBERT E. KING, JOHN C. EDWARD's.

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