US1356151A - Grating and method of constructing same - Google Patents

Description

O. JACKSON.

GRATING AND METHOD OF CONSTRUCTING SAME.

APPLICATION FILED FEB. 10, 1920.

1,35 ,151, Patented Oct. 19, 1920.

v I S A :I 5 Z 5 z if PATENT OFFICE.

oLccTr JACKSON, or BROOKLYN, NEW YORK, ASSIGN'OR T0 HEcLA IRON wonms, or

BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

GBATING AND METHOD @F CONSTRUCTlENG SAME.

manner.

To all whom it may concern Be it known that l, OLCOTT JACKSON, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Gratings and Methods of Constructing the Same, of which the following is a specification.

My invention relates to steel or other metallic gratings and to the method of constructing the same and has for its object the production of a grating of simplicity of construction, of strength and of low cost to manufacture, the members of.which may be'readily assembled and easily and accurately joined together.

It has heretofore'been customary to construct gratings by providing the members thereof with holes at their points of meeting or intersection and passing rivets through the holes and joining the members by an ordinary riveting operation. This necessitates turning the members on their sides and holding them in this position with lid thermore this method is objectionable for the reason that the riveting operation in a great many cases has the effect of stretching or drawing the metal members particularly if the members are sinuous or other than perfectly straight and if the membersare of some length the holes or perforations therein at a point remote from any riveting operation will be drawn out of alinement,

thereby making difficult or impossible at that remote point a riveting of the members together.

By practising my inventionl have found that the objections hereinbefore noted have been obviated. that the members may be fastened together to produce the finished or completed grating more easily and expeditiously than by riveting them together and that'the finished grating'possesses as much strength and rigidity as if its members had been joined by riveting. Furthermore my invention permits member or members to be removed from the completed structure Specification of Letters Patent.

Patented Oct.19, ieeo.

Application filed. February 10, 1920. Serial No. 357,586.

is a plan view of my improved Fig. 3 is a front elevation of one of the sinuous members of the grating.

Fig. 4 is a perspective view of the clip for joining the members together.

Referring in detail to the several figures of the drawing: 7

1 indicates the straight longitudinai memembers intermediate the longitudinal members of a grating which are joined or connected at their crests 3 to the straightlongitudinal members to produce the finished or complete grating. If the old riveting operation were employed for joining the members together they would be provided with holes at. their points of meeting or intersection, for instance at the point A, where the crests of the sinuousmembers meet or engage the longitudinal members, then turning the members over with their sides parallel .to the ground, passing rivets through the holes and rivetingthe members together three at a time at successive points. These operations wouldlbe continued by a building up process, that is by the addition to and riveting to the structure of additional members until it has reached or attained the desired size. When, however, the memhere were riveted together at the oint A, it would be found that the sinuous members which are riveted to the longitudinal memiber at that point would be drawn or v7O tallic members and 2 the sinuous metallic stretched so that when the point B, for instance, were reached for the rivetin operation, the holes with which the mem ers are provided for riveting at that point would be apt to be drawn out of alinernent thereby precluding the riveting operation or making it impracticable at the point B. According to my invention I provide themembers at their meeting or intersecting points with holes 4:, preferably rectangular-shaped, and of a size permitting them to snugly receive fiat rectangular-shaped lockin clips 5.

All the parts of the grating, at is; the

sinuous members 2 and the longitudinal members 1 thatform the complete structure of the required size are then assembled on their edges on a tableuor other support in substantially the same position the oocupy as in the finished product an the locking clips 5 are slipped through the holes 4 of the sinuous members and the longitudinal members with the ends 5rthereof which form flanges projecting outwardly as shown at the right of Fig. 2, which ,clips prevent drawing or stretching of the members at any point. Said ends or flan es 5 are then forcibly bent downwardly into locking engagement with the sides of the crests 3 of the sinuous members 2 by means of a forked tool 6 having arms 7 for engaging said ends or flanges 5'. This eflects a locking of the members of the grating together as is obvious and the locking or' joining operation may be easily and expeditiously accomplished. Also if it is desired'to replace any of the members of the grating, this may be accomplished by unlocking the clip joining that,

memberv to the other members by turning the flanges thereof upwardly, removing the clip and joining the new member to the other members in the manner previously described.

What I claim as my invention is 1. A metallic grating comprising longitudinal members and sinuous members intermediate said longitudinal members with the crests of the sinuous members engaging the longitudinal members, said longitudinal and sinuous members being provided with holes in alinement at their points of meeting and locking clipspassing through said holes and provided with flanges bent over against the flat sides of the sinuous members to hold the longitudinal and sinuous members in locking engagement.

ends of the locking clips over into engagement with the sides of the members to lock them against relative movement. 7

3. The herein described method of constructing a metallic grating comprising longitudinal members and sinuous members consisting in providing the sinuous members with holes at their crests and the longitudinal members with holes adapted to register with the holes in the sinuous members, assembling the parts on their edges with the sinuous members intermediate the longitudinal members and engaging the same and with the holes in the members in register, passing clips through said holes and bending over the ends of said clips into locking engagement with the sides of the sinuous members.

4. The herein described method of constructing a metallic grating consisting in providing the members thereof which form the complete structure of the required size with holes, assembling the members on their edges with the holes in register, passing locking clips through said holes and bending the ends of the locking clips over into enga ement with the sides. of the members.

igned at Brooklyn, in the county of Kings and State of New York this 4" day of February, A. D. 1920.

OLCOTT JACKSON. Witnesses:

WM. A. OCoNNoR, DANIEL A; Woons.

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