US1171553A - Bridge. - Google Patents

Description

J. B. STRAUSS.

BRIDGE.

APPL1cAT1oN FILED APR.1,1913.

1.171,553. Patented Feb.15,19111.

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1. B. STRAUS.Q

BRIDGE.

APPLICATION FILED APR. I. I9I3.

Patented Feb. 15, 191,6.

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JOSEPH B. STRAUSS. F CHICAGO. ILLINOIS.

BRIDGE.

Application filed April 1, 1913.

Zhu/1 'r/mm itmay concern.'

Be it known that I, JOSEPH B. Srnaoss7 a citizen of the United States, residing at Chicago. in the county of Cook and State ot' lliinois. have invented a certain new and useful linprovement in Bridges, of which the t'olhiwmg 1s a specication.

lhis invention relates to bridges and has for its object to provide a new and improved bridge of the bascule type.

The inrention is illustrated in the aceompanving drawings wherein- Figur.. 1 is a view showing one form of bridge embodying the invention: Fig. 2 is a plan view of the device shown in Fig. 1; Fig. is a view showing a modified construe lion; Fig. 4 is a perspective view showing a portion of the counterweight; Fig. 5 is a view showing the method of reinforcing the ronnterweight.

Lilie numerals refer to like parts throughout the several figures.

Referring now to Figs. 1 and 2 of the drawings, I have shown a movable span 1 pivotally mounted at 2 upon the supports 3. A eonnterweight frameor support 4 is connected with the movable span and is provided with a counterweight The counterweight frame or support 4 has a plurality of angular-ly disposed members, said members having an angular open space between them, the open end of the space being at the bottom thereof. As shown in Fig. 1, the-counterwe'ght trame has connecting members and i extending upwardly from the counter'- weight andl the support for the counter- Qvcight trame. said members being connected ai :i point. above the plane passing through the. lower ends thereof, `the connection being shown at. the point 8. This connection allows the movable span to be moved to its open position without the counterweight trame coming in Contact with any of the Statiooarj parts. ln the construction shown in i`igs. l and 2. the trunnions of the movA able span l have inside bearings fl and outside bearings (see Fig. '2). There is an insult post or support for each inside bearing and a brave il between each of said posts and the fixed portion 1; so as to take the horizontal thrust on sai-.l inside bearings. Thisv fixed support 13 i's shown as a girder extending across between the stationary pieifes i3 ot' the fixed portion of the. bridge. The braces 11 form linee braces between the Speeification of Letters Patent.

Patented Feb. .15, H6.

Serial No. 758,140.

supports for the bearings and the stationary piece or garder 12. A

Figs. 3, l and 5 show a construction where- Ain the counterweight 5 is provided with a series of angular members llembedded in the concrete and connected with the couuterweight support. These angular members 14 are .preferably arranged to form triangular trusses; There are also a series of intel-conneet-ing members 15 between the triangular trusses, the triangular trusses and interconnecting members being embedded in the concrete. The counterweight is provided with a bottom portion lo and side portions 1T. The side portions 17 are. preferably supported upon the angular members or trusses ot' the. eounterweight irrany desired manner and the concrete. is then applied'. said bottom and side portions acting as a self-supporting frame for the counterweight while the concreteis being erected. thereby making it unnecessary to have false work for this purpose.

It will be seen that there is here provided a. bridge having a counter-weight frame connected therewith and a rigid counterweight tixed to said counterweight frame'and depending therefrom when the bridge is closed.

As illustrated` the pieces 1T and 1G are suspended on the ounterweight truss bv means of bolts 18. Soin-` suitable. operating mechanism is provided for moving the main span about its pivots. such as for example, the rack 19 and the pinion 20. The Counterweight is located below the roadway 21.

By means of this construction where the tail end of the main Span has the reiintrant angle, that is the construction where there is an angular open space between the members into which the cross fixed support may enter as the bridge is lifted, provides an efficient means for using this cross support and still getting the full opening of the bridge and a construction in which the cost is very materially reduced. The construction of the eounterweight, also, reduces the cost. as the particular manner in which the metal is disposed is much more economical and permits theI use of a concrete cfuinterweight greatly reduced in cost and vet efiiciently supported and of the proper strength and durability. Thisv construction was particuiarlv provided to avoid difficulties found in attempting to adapt in actual practice the large concrete counterweights necessary for llO large bridges and which have to be changed in position so as to change thestrainsas the bridge is opened and closed.

I claim:

1. A bascule bridge comprising a movable span. a counterweight frame associated with said movable span upon which the counterweight is supported, saidV counterweight frame having a plurality of angularly disposed members, said members having an angular open space between them, the o'pen end of said space being' at the bottom thereof', a cross support extending under said movable span, inside and outside bearingsF for said movable span, mounted upon said cross support, said cross support received in said space between said angularly disposed members when the movable span is moved to its open position.

A bridge colnprising a main span, a counter-weight support connected therewith, a series of angular members connected together to form a plurality of triangles, said angular members connected with said counterweight support, concrete connected with said angular members and in which they are embedded.

3, A bascule bridge comprising a fixed portion, a movable portion mounted on trunnions, an inside and outside bearing for the trunnions, an inside support for the inside bearing and a brace between said support and said fixed portion so as to take the horizontal thrust of said inside bearing.

4. A bascule bridge comprising a. main span provided with a plurality of trusses, a fixed support, a portion of which extends underneath -the main span, 'a counterweight carrying part comprising a member behind the support and extending upwardly there` from. a second member extending upwardly from said first member at av distance from its point of connection with the span, said second member also connected with said span, a third member projecting rearwardly from the upper chordof the main span, the

three members forming a supporting frame,

a` series of triangular members connected with said frame, a counterweight connected with said triangular members, there being an open space between said first member and said series of triangular members so that said members clear the support in all of the various positions of the main span.

5. A bascule bridge comprising a main span, trunnions upon which it is mounted, said main span terminating at'said trunnions, a triangular frame built outifrom said Span toward the rear thereof, a series of triangular frames carried upon said first mentioned triangular frame as a support, a counterweight carried by said series of triangular frames, said series of triangular frames separated from the first triangular frame by a space open at the bottom, a cross support under said main span, said cross support received into said space When the main span is open A 6. A bridge complising a'main span,a coun- ,Q terweight therefor comprising a series of triangular trusses connected with said main span, a`series of interconnecting members between said triangular trusses, said trusses and members embedded in concrete.

7.. A bascule bridge comprising la'main 75 span, trusses therefor, a concrete counter- 'weight therefor comprising a metal bpttom portion, two metal side portions associated with the bottom portion, trusses between said side portions and connected to the trusses associated withthe main span, said side portions supported on said trusses, the bottom and side portions constituting a self-supporting form for concrete while the counterweight is being erected.

In testimony whereof, I affix my signature in the presence of two witnesses this 31st day of March, 1913.

JOSEPH B. STRAUSS.

VVitnesses:

MINNIE M. LINDENAY, MINNIE SUNDFAR.

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