US2521349A

US2521349A - Loading bridge

Info

Publication number: US2521349A
Application number: US687559A
Authority: US
Inventors: Diamond Harry
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-08-01
Filing date: 1946-08-01
Publication date: 1950-09-05
Anticipated expiration: 1967-09-05

Description

H. DIAMONIQ LOADING BRIDGE Sept. 5, 1950 Filed Aug. 1, 1946 Patented Sept. 5, `1950 fom'rso STATE-s PATENT o'FFICE assi-,34.9 Y

LOADING BRIDGE Harry Diamond, lilizaletltbl.. J- Application August 1,371i946,l Serial No. 687,559 sfolafms. 01.. ifi-.721i 'Y This invention relates to loading bridges and more particularly to removable loading bridges j ladapted to be taken from one place. to another..

The principal. Vole-ject of this, invention.v is the provision of a loading bridge which isaclaptedito be .moved by means of a small truck hatingv a tiiistyfpe @rating a truolahavng a forked. elevator mayliit ,g

.up the. bridge, oarrvvit from one point to another and` then deoosit it into oherativeposition.. device. has been developed for use. in Natal.- ine stallations and itY hassuccessfullybeen osez-iisr such installations.

Another object of this invention is. the profile sion of a. loading bridge. of the character described which is adapted toeren the sooshetwceil loadingv and unloading nlatiorms however wide or 2 For thesame purpose anv I-beam il is also welded to theplatelll. Weldeclto the side edges of the plate t are a pair of stringe-rs or side rails. or guards. 2E. '.Aflixed vto one end of saidv stringere and .aicsed also to the endso the I-beam Il .are a pair of .vertically disposed pockets 2 l. At the opposite. enclsoi--the stringers. 2i! are affixed pins 22 and mounted on said pins are a pair of flanged looking liars 23.. The opposite ends ofjsaid lock# ing bars extend into. theV side pockets 2i and are adapted, to float freely therein. on vertical lines.

These locliii bars., 2.3. on their. flanged portions v .are each or@ ded; witha serios oi holes is ei;-

narrow these gaps may be Within of course rear sonable. limitations... Y

A further object of; this invention istlieerovision of a loadias, bridge ofthe cha t ,r described which is. assisted to. he used between. two. eletF ier-ms. which. are located at diiorvnt levels, grotend-ills; ,Substantially their' foil. length. Looking pins are adapted to, extend in part into.. and tls-rough; said holes. It will oe seen inll'ig. 3. that ,g i. these locking pins. are somewhat U-shaped and that they liave-.voee'long and one short leg, the two legs being readilyvpositionedi relative to each other; bymeans ofcrossplate- 2l. They two legs are so spaced that theyale adapted to enter adjoining holes 2i. io the locking hars 23.

The loading bridge. hereinabove described. may heuscd as shown in Fig. Stor example. In said .ligure the bridge is shown. extending from a low platform 3.@ to a high. platform 3l. The loading `bridge is so positioned that the pivoted ends of prior soglie-ation .tiled Li-laesst. 10, 19t-4. vbribe same applicant and bearing. Serial No. 548,910 asesinos. abandon troiette@ esiliati-merits: of this. invention are shown, the accompanying drawingl ilo` which;

Eis... 1. is; a elan; tiew: of. a. loading. herein claimed; j

Fig. 2, is a sectional View therethrough on the line 2 2 of Fig. l;

Fig. 3 is a sidegiet/otsaidlloading bridge;

Fig. 'i is a plan view, in enlarged detail, of one of the lifting handles by which alforkecl truck; may raise, carry and. lower the said'loading bridge;

Fig. 5 is a sectionalview. on-theline E-- of Fig. 6 a second form el",v lifting handle,l a front view oithe handle being shown; and

brides as e.

Eig,A G, l-saV sectional View on the line 6 6 of Referring now to Figs., l. to 4., inclusive, it Will he. seerrthat the loading; Abridgeherein claimed at one end l! and `which; is cor-vedi less emnomoeoiyaiits @sostegno is.

tr locking barsi are situatedadjacent the lower platform andthe floating ends thereof. adjacent the higher platform. The force of gravity acting. upon the freely oating endsv of said. locking bars carries them downwardly until they rest against the bottom. ci the side pockets 2l. In this position the locking bars. are more. nearly parallel to the top snr'acesof the two platforms. Such being the casawhen the. looking Apins 25. are inserted into appropriate holes 3ft of the locking bars; these pins engage the verticalside or edge ofthe lower platform 3o, on substantially vertical lines. In.V other Words the' pins are substantially aligned with the vertical edge of the lower plat..- fjQlm. This makes for 'a safe, non-slip` engageyment;betj-iie.ony the pins. and the lower platform.,

It will he seen particularly in Figs. 1, 2 and 4 'that the' loading bridge above described is pro.- 'vid'ed'jwith a pair of' liftingv handles 4.8.v These lifting handles are substantially U-shaped' and they are pvoted' at the. free ends-of their legs by means of pins 4! to the adjacent longitudinal ribs.. It?,V These. handles are enclosed, when in 'inoperative position, within a pair of pockets 42. llfshaped OpeningsAl in the. plate H1 Whichregis.- ter `fvtith the l.l.shapedv handles. 40 whenY these .handles arevr in.: inoperative. position provide., the .openings-'imm which these handles may .he raised inta ogierativol position. is. clearly. sho-,Wn` in side of plate It to reinforce and strengthen it. .ligqll- .1.IlhesegU'-sl'tapeil. Slots are. enlargediat to provide room for the fingers when it is desired to raise the handles 40 into operative position. The dot and dash lines 46 in Fig. 2 show the operative position of said handles. It will be seen that this operative position is substantially perpendicular with respect to the plate I0.

The spacing of the two handles corresponds to the spacing of the two arms which constitute the fork of trucks having conventional forkshaped lifting apparatus. The two handles 40 when in the dot and dash position shown in Fig. 2, are adapted to receive the two arms oi these trucks. It is a simple matter therefore to carry the loading bridge above described from one place to another.

In Figs. 5 and 6 another form of lifting handle is shown, to wit, the handle bearing character references 50. This handle like handle 40 is of U-shape. It is not pivoted however and the free ends of its two arms are atxed to a plate 5|. Handle 50 is carried within a pocket 52 axed to the bottom of the loading bridge. A slot 54 in the top plate of the loading bridge provides the passageway through which the handle 50 may be moved from the inoperative position shown by means of the solid lines in Fig. 6 to the operative position shown by means of the dotted lines 55 in said Fig. 6.

It will be seen in Fig. 5 that when the handle is in its inoperative position it is supported by a bracket 57. In Fig. 6 a iianged bracket 58 is shown which supports the handle when it is in operative position. As shown in said ligure, the plate 5I of the handle 56 is adapted to rest upon the flange of anged bracket 58, in order to support the handle in the operative position indicated by the dotted lines 55. In all other respects the loading bridge shown in Figs. 5 and 6 is similar to that shown in the first four gures.

It will be understood that this device may be modied in accordance with diierent requirements without any departure from the essential principles of the invention. For example, the

4several major parts of the loading bridge have been described as being welded to each other. It will be appreciated that any other method of aixing one part to another may be used.

I claim:

l. A loading bridge comprising a loading plate, a locking bar pivoted at one end to the side of the loading plate near one end of the plate and extending along the side of the plate toward the other end thereof, said locking bar having a plurality of holes therein and a locking pin disposed in one of said holes, the weight of the locking bar tending to swing the pin against an adjacent vertical surface of a loading platform.

2. A loading bridge comprising a loading plate, a locking bar pivoted at one end to the side of the loading plate near one end of the plate and extending along the side of the plate and toward the other end thereof, a locking pin, and means to adjust the locking pin along the locking bar as desired, the weight of the locking bar tending to swing the pin against an adjacent vertical surface of a loading platform.

3. A loading bridge comprising a loading plate, a locking bar pivoted at one end to the side of the loading plate near one end of the plate and extending along the side of the plate and toward the other end thereof, said locking bar having a plurality of holes therein and a locking pin disposed in one of said holes, the weight of the locking bar tending to swing the pin against an adjacent verticalsurface of a loading plat- 4 form, and a pocket element disposed at the side of the loading plate with an open face receiving the end of the locking bar to guard and guide the same in its vertical free movement.

4. A loading bridge comprising a loading plate, a locking bar pivoted at one end to the side of the loading plate near one end of the plate and extending along the side ofthe plate and toward s the other end thereof, a locking pin, means to adjust the locking pin along the locking bar as desired, the weight of the locking bar tending to -swing the pin against an adjacent wall of a loading platform, and a pocket element disposed at the side of the loading plate with an open face receiving the end of the locking bar to guard and guide the same in its vertical free movement.

5. A loading bridge comprising a loading plate, a flanged locking bar pivoted at one end to the side of the loading plate near one end of the plate and extending along the side of the plate and toward the other end thereof, said locking bar having a plurality of holes along its iianged portion, and a locking pin disposed in one of said holes, the weight of the locking bar tending to swing the pin against an adjacent surface of a loading platform.

6. A loading bridge comprising a loading plate, a anged locking bar pivoted at one end to the side of the loading plate near one end of the plate and extending along the side of the plate and toward the other end thereof, said locking bar having a plurality of holes along its anged portion, a locking pin disposed in one of said holes, the weight of the locking bar tending to swing the pin against an adjacent surface of a loading platform, and a pocket element disposed at the side of the loading plate with an open face receiving the end of the locking bar to guard and guide the same in its vertical free movement.

7. A loading bridge comprising a loading plate, a hanged locking bar pivoted to the side of the loading plate near one end of the plate with a series of holes in the anged portion thereof, a U-shaped locking pin, the ends of the legs thereof extending through the holes in said anged portion.

8. A loading bridge comprising a loading plate, a flanged locking bar pivoted to the side of the loading plate near one end of the plate with a series of holes in the flanged portion thereof, a U-shaped locking pin having legs of unequal length extending through adjacent holes in said hanged portion, and a cross plate extending between said legs to limit the extension of said legs into said holes.

HARRY DIAMOND.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Bryson Oct. 26, 1948