US1669236A - Grating - Google Patents

Description

May 8, 1928. 1 1,669,236

L. FICK y Y GHATING Filed Feb. e. 1927 fz www Wn lumi D -w 1 5 MMM "WI 'www A milf 1 i za y Y, HW(1 u; mi) W H' Il i i 2 L7 lh 3;; M M ZM l Patented May s, 1928. 7* j 1,669,236*

" *UNITED PATENT" OFFICE. n y

i i :comme Froggy 1;izooirL-irla,NEvrvom;` A i i l i i y einer;1m.'l u y l applicati@ inea rtiaary s, iaaafiselri'aino; 4v16a-ees.

This invention relates tozimprovements in configuration conforming. to .the outer con-` gratingsy adapted for use'in floors fior jareatour foftlielip andnilepressions and shoul. ways, sidewalk openings, subwayk construcders ofbarlOg f f A Vj, y i. tions vor the like, andthe ymethod of making' For the reception of barl() the transverse a the same. j bars 15 are subjected to bending, as indido iIt is the prineipalobject of `my, inventionifcated in Figure 5, bygmeans ofv any suitable to provide a readily 'iiiade'grating of simple tool orfappara-tus,.so that" the slots ornotches and therefor inexpensive Construction, yet '16 areA somewhat distended or expanded, durable and extremely serviceable. indicated at 17, for allowing the ready inl Another object of my invention is the protroductionv of bar in a manner easily un- 65 vision of a novel and improved method for derstood, ivhereafter the parts are firmly f making such gratingsby the use of simple pressed together in ktheir adjusted relative tools. Y positions by hydraulic or other means inA A further object of myV invention is the order to form a compact Whole` l5 provision of a gratingof great strength by InFigures 8 and 9 I have illustrated a 70 interlocking the bearing and transverse bars method of making a grating according to thereoif firmly b y a simple method. my invention by firmly connecting the bear- These and other objects andv advantages of ing bar l0 withk each of the transverse bars my invention will become more fully known according to which bearing bar 10 is 2" as the description thereof proceeds, and will entered first loosely and preliminarily into 75 then be specifically defined in the appended the recess 18 of a suitable tool or die `19.

claim. One'of the branchesof said tool forming the In they accompanying drawing forming a central recess thereof, has an upper straight vmaterial part of this disclosure: edge, as indicated at 20, While the other Fig. 1 is the front elevation of a bearing branch on the opposite side of the recess 18 80 bar or plate used in the construction oi the hasfan upper, pointed or beveled edge, as

grating according to my invention. indicated at 21. According to my novel and Fig. 2 is an end vievv` thereof. improved method of making gratings, the Fig. 3 is a front elevation ofa transverse bar 10 is first loosely entered into the slot :io bar, straight. 17 corresponding thereto in transverse bary 85 Fig. 4: is an end view thereof. 15, and with the lower end of bar 10 in the Y Fig. 5 shows the transverse bar, bent. rec-ess 18, the tool 19 is then driven home by Fig. (i is a view seen in the direction of the means of any suitable Well known tool, so arrows @-6, Figure 5, partly in section. L kthat the bevel edge 21 will slidingly engage Fig. 7 is a top plan view of a grating conthe bar 10 and successively press the lip 9o structed according to my invention. 12 `of bar'10 into the corresponding recess Fig. 8 illustrates the first step of my novel in bar15, and the angular notch and shout method of making gratings according to my der Vwill firmly engage the corresponding re.-

invention by the help of a special tool. cess 22 .and shoulder 23 oi' part or bar 15 4U Fig. 9 illustrates the second or final stepv to firmly interlock both bars. o5 of the method disclosed in Figure 8. It will be apparent that by using a corj As illustrated, the `grating comprises bear responding number of bearing bars/m ing bars 10 each having a plurality of preftransverse bars any size of grating/may be erablyrectangular,parallel notches or reconstructedy for any desired purpose, and

cesses 11 cut into the upper edge Vof the bar, that these bars Will be firmly interloclced in 100 and below the saine"apluraiityzef "y 19 fimir. relativev adjusted ypositions against torformed on its face,`and projecting out of the sion and separation. W plane kot bar l0 llCl-plfelably @qual in It iskto be understood that while Illiave number to the number ofkfnotches 11, `While shown as an example thev preferred form of 5o on its opposite face the baror plate 10 has myconstruction and my method of practical V105 :formed therein a corresoonding numberof ly constructing the same, such changes asfvr depressions 13 each forming anvacute angle come Within the scope of the :appended and a shoulder 14. j claim may be'made in thev general arrange- The transverse bars 15 comprise each a"-'ment and the relative positionsof the parts plate having in its loWer edge al slot/16 of a ofthe gratings and in the construction of '1,10

the minor details thereof Without departure from the spirit of my invention and the principles involved.

It Will be evident, that this grating, Which I call tooth-lock joint and the method of* making same, can also be made and executed in the reversed order from that described! above, i. e. the locking means instead of loeing' arranged on the hearing plates7 may also just as well be arranged on the transverse bars, and in this case the bearing bars must naturally be provided with the recesses.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent is:

A grating comprisingr asupporting bar provided with a recess leading 1n from the edge thereof and provided at one side and at a point in spaced alinement with the recess with an outstanding lip and at the opposite side at a point in spaced alinement with the, recess with a depression one edge of which defines a shoulder. a transverse bar having a recess leading` in from the edge thereof, said recesses inter-engaging each other. the-recess of the transverse bar being provided at one edge with a. notch receiving said'lip and' at an opposite edge with a shoulder engaging the shoulder at the edge of the depression in the supporting bar. Y

Signed at New York in the county of New York and State of New York this 7th day of Fehr'uary, A. D. 1927. l

LUDWIG FICK.

Images