US1193857A - Ij nouvdilddv - Google Patents
Ij nouvdilddv Download PDFInfo
- Publication number
- US1193857A US1193857A US1193857DA US1193857A US 1193857 A US1193857 A US 1193857A US 1193857D A US1193857D A US 1193857DA US 1193857 A US1193857 A US 1193857A
- Authority
- US
- United States
- Prior art keywords
- plate
- aperture
- metal
- apertures
- tread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 description 22
- 210000002105 Tongue Anatomy 0.000 description 18
- 241000209134 Arundinaria Species 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 230000001154 acute Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000994 depressed Effects 0.000 description 2
- 230000000881 depressing Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/42—Gratings; Grid-like panels
- E04C2/427—Expanded metal or other monolithic gratings
Definitions
- This invention relates to improvements in tread plates, and the object of the invention is to produce a metal tread plate of the apertured type having the apertures so guarded that all possibility of accident resulting from persons inserting umbrellas, canes and the like through the apertures will be pre eluded.
- the device consists essentially of a plate, preferably of rolled sheet metal, having apertures therein formed by making cuts in the plate and slightly depressing the material inclosed by the cuts. The metal around the opening thus formed is turned upwardly.
- FIG. 1 and l are partial plan views of a tread plate showing dilterent aperture arrangements.
- Fig. 3 is a front elevation of a plate.
- Fig. l is an enlarged plan view of a single aperture.
- Fig. 5 is a section on the line 5-4),
- Figs. 6 and 7 are plan views showing slight modifications of shape.
- Fig. 8 shows a slight modification.
- 11 designates a plate ot suitable material, preferably rolled sheet metal, which may be provided with flanges 12 if desired,
- The. plate is provided with a multitude of small tongues or lugs 13 formed integral therewith by making curved or angular cuts in the plate.
- the portion of metal inclosed by each out forms a tongue and is bent slightly downward, as clearly shown in Fig. 5, so as to form an aperture 14 in the plate.
- the metal surrounding the aperture adjacent the free edge of the tongue is bent upwardly, as shown at 15, to provide a gripping surface upon which a persons foot will not readily slip.
- Figs. 1 to l the tread plate has been shown with an aperture formed by an areuate cut of about 240.
- the invention is by no means limited to this particular form, as
- arcuate cuts much shorter may be used, as shown in Fig. l', wherein the cuts separating the two tongues 13 are less than semi-circular, and are in tact equal arcs described from a. common center.
- the cut is angular in form producing a pointed tongue 13.
- Figs. 1 to 6 show the result produced by making the single cut, Fig. 7 by making two meeting cuts, while Fig. 8 shows the same result produced with two outs which do not meet but separate a strap 16 attached to the plate at its ends and depressed at its central portion, forming an elongated aperture.
- the long edges of the aperture are turned up as previously described to form the gripping portions 15. It is obvious that many other shapes may be used, as desired, and also that the arrange ment of the tongues in the plate may be of. any suitable form, as indicated by the difference between Figs. 1 and 2.
- a device of the character described comprising an apertured plate having a portion of the periphery of each aperture upwardly turned, and a tongue preventing passage through the aperture in a direction perpendicular to the plate.
- a device of the character described comprising an apertured plate, ridges or bosses partially surrounding each aperture formed by upward displacement of the metal at the edge of the aperture, and
- a trend plate comprising an nperi'urml WILLIAM S. ATW'OOD.
Description
W. S. ATWOUD.
TREAD PLATE.
APPLICATION HLED JAN. 14. 1915.
1 1 93,857. Patented Aug. 8, 1916.
-JUUUUUUUUU EUUUUUUUUUC iuv uuuuvu :uuuuuuuuu U U U U U U U U :UUUUUUUUU L9Hii92ii 4 A; A l 1 21 #7418. E6. 6 F/a. .7
UNITED STATES PATENT OFFICE.
WILLIAM S. ATWOOD, OF MONTREAL, QUEBEC, CANADA.
Application filed January 14, 1915.
To all HhUTIL it may concern:
Be it known that I, ll iLLiAM S. Arrwoon, a citizen of the Dominion of Canada, and resident of the city of Montreal, in the Province ot' Quebec and Dominion of anada, have invented certain new and. useful Improvements in Treadllates, of which the following is a full, clear, and exact description.
This invention relates to improvements in tread plates, and the object of the invention is to produce a metal tread plate of the apertured type having the apertures so guarded that all possibility of accident resulting from persons inserting umbrellas, canes and the like through the apertures will be pre eluded.
The device consists essentially of a plate, preferably of rolled sheet metal, having apertures therein formed by making cuts in the plate and slightly depressing the material inclosed by the cuts. The metal around the opening thus formed is turned upwardly.
In the drawings which illustrate the invention:-Figurcs 1 and l are partial plan views of a tread plate showing dilterent aperture arrangements. Fig. 3 is a front elevation of a plate. Fig. l is an enlarged plan view of a single aperture. Fig. 5 is a section on the line 5-4), Fig. t. Figs. 6 and 7 are plan views showing slight modifications of shape. Fig. 8 shows a slight modification.
Referring more particularly to the drawings, 11 designates a plate ot suitable material, preferably rolled sheet metal, which may be provided with flanges 12 if desired,
arranged in. any suitable manner. The. plate is provided with a multitude of small tongues or lugs 13 formed integral therewith by making curved or angular cuts in the plate. The portion of metal inclosed by each out forms a tongue and is bent slightly downward, as clearly shown in Fig. 5, so as to form an aperture 14 in the plate. The metal surrounding the aperture adjacent the free edge of the tongue is bent upwardly, as shown at 15, to provide a gripping surface upon which a persons foot will not readily slip.
In Figs. 1 to l, the tread plate has been shown with an aperture formed by an areuate cut of about 240. The invention is by no means limited to this particular form, as
Specification of Letters Patent.
Patented Aug. S, 1916.
Serial No. 2,178.
arcuate cuts much shorter may be used, as shown in Fig. l', wherein the cuts separating the two tongues 13 are less than semi-circular, and are in tact equal arcs described from a. common center. In Fig. 7, the cut is angular in form producing a pointed tongue 13. Figs. 1 to 6 show the result produced by making the single cut, Fig. 7 by making two meeting cuts, while Fig. 8 shows the same result produced with two outs which do not meet but separate a strap 16 attached to the plate at its ends and depressed at its central portion, forming an elongated aperture. The long edges of the aperture are turned up as previously described to form the gripping portions 15. It is obvious that many other shapes may be used, as desired, and also that the arrange ment of the tongues in the plate may be of. any suitable form, as indicated by the difference between Figs. 1 and 2.
It will be readily understood that this invention is an improvement on my former patent applications, Ser. Nos. 871,055, 872.58% and 872,585. These inventions show tread plates adapted to particular and to more or less general purposes. It has been discovered, lIOWOVel', that tread plates with apertures entirely through are a source 0 danger in the steps of street railway cars or anywhere where they will be used by the general public, who are liable to accidentally or otherwise insert umbrellas, canes or the like through the plate apertures, with possibly disastrous results. In the present invention, an edge is termed in the plate which may be turned up to l'uovidc the re quired tread surface, as in the former patent applications. The tongue closes the aperture sutlicientl y to prevent the catching of an umbrella or cane therein, but yet leaves a sufficient space for the escape of water.
Having thus described my invention, what I claim is 1. A device of the character described, comprising an apertured plate having a portion of the periphery of each aperture upwardly turned, and a tongue preventing passage through the aperture in a direction perpendicular to the plate.
2. A device of the character described, comprising an apertured plate, ridges or bosses partially surrounding each aperture formed by upward displacement of the metal at the edge of the aperture, and
tongues below the apertures integral with placed in formation of the aperture downthe plate and formed by downward (lisu'nrdly turned through an :ircuate angle. 3
placement of the metal IPI'HOYWI from the In Witness whereof, I have hereunto set apertures. my hand, in the presence of two Witnesses.
A trend plate comprising an nperi'urml WILLIAM S. ATW'OOD.
metal sheet having :1 portion of the metal at Witnesses:
the edge of each aperture upwardly turned S. R. W ALLEN,
through an acute angle, and the metal dis- G. BI. lWoRnLANI).
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.
Publications (1)
Publication Number | Publication Date |
---|---|
US1193857A true US1193857A (en) | 1916-08-08 |
Family
ID=3261806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1193857D Expired - Lifetime US1193857A (en) | Ij nouvdilddv |
Country Status (1)
Country | Link |
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US (1) | US1193857A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD246388S (en) * | 1976-08-12 | 1977-11-15 | Shivvers Charles C | Perforated plank for the floor of a material drying bin |
US20040187416A1 (en) * | 2003-03-25 | 2004-09-30 | Grossman Rodney B. | Grain bin flooring system |
-
0
- US US1193857D patent/US1193857A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD246388S (en) * | 1976-08-12 | 1977-11-15 | Shivvers Charles C | Perforated plank for the floor of a material drying bin |
US20040187416A1 (en) * | 2003-03-25 | 2004-09-30 | Grossman Rodney B. | Grain bin flooring system |
US7310919B2 (en) | 2003-03-25 | 2007-12-25 | Ctb Ip, Inc. | Grain bin flooring system |
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