US1171316A - Collapsible core for concrete culverts. - Google Patents

Description

A. E. CAMBLIN. COLLAPSIBLE CORE FOR CONCRETE CULVERTS,

APPLICATION FILED JUNE 4,1915. I

Patented Feb. 8,1916.

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v A. E. CAMBLIN.- COLLAPSIBLE CORE FOR CONGRETE CULVERTS. APPLICATION HLED JUNEM 1915.

1,171,316, 1 Patented Feb. 8,1916.

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A. E. CAMBLIN. COLLAPSIBLE CORE FOR CONCRETE CUL'VERTS.

APPLICATION FILED JUNE 4, I915.

. Patented. Feb. 8, 1916.

3 SHEETSSHEET 3.

WIT/VESSESQ ATTORNEYS ARTHUR E. CAMBLIN, 0F STELLA, NEBRASKA.

COLLAIPSIBLE CORE FOR CONGRETE. CIlLVERTS.

Specification of Letters Patent.

Patented Feb. 8, 19116.

Application filed June 4, 1915. Serial No. 32,092.

T 0 all whom it may concern:

Be it known that I, ARTHUR E. CAMBLIN, a citizen of the United States, and a resident of Stella, in the county of Richardson and State of Nebraska, have invented certain new and useful Improvements in Collapsible Cores for Concrete Culverts, of which the following is a specification.

My present invention relates generally to collapsible cores for concrete culverts adapted in use to freely support mold boards upon which culverts or like structures are erected of concrete or plastic materials of this nature, my primary object being to provide certain improvements in devices of this character, with respect to simplicity, reduced cost, and general effectiveness, particularly over my co -pending application Number 715,322, which was filed August 16, 1912, Patent No. 1,142,669, June 8, 1915.

In the accompanying drawings which illustrate my present improvement, Figure 1 is a front elevation of one of my improved forms in operative position with mold boards thereon. Fig. 2 is a vertical section taken therethrough substantially on line 22 of Fig. 1. Fig. 3 is a sectional view through a culvert after formation illustrating one of my improved forms in collapsed position with the mold boards removed. Fig. 1 is a vertical section taken therethrough substantially on line 14l of Fig. 3. Fig. 5 is a vertical section taken through a pair of the supports illustrating the end connection in the form of links between a series of the trip gates. Fig. 6 is a detail perspective view of one of the trip gates. Fig. 7 is a view partly in side elevation and partly in section illustrating a slightly modified form of arch member with side wings adjustably carried thereby. Fig. 8 is a similar view illustrating another slightly modified form in which differently adjustable side wings are utilized. Fig. 9 is a detail sectional view taken therethrough substantially on line 99 of Fig. 8. Fig. 10 is a detail perspective view of the drawbar actuating lever. Fig. 11 is a detail section taken through the draw bar actuating lever substantially on line 1111 of Fig. 10. Fig. 12 is a detail perspective view of the relatively engageable end portions of certain sections of the draw bar.

Referring now generally to these figures, it will be seen that as in my application be fore referred to, I provide a collapsible culvert core consisting of a plurality of supports for the beveled-edge mold boards A, each of the supports including an upper rigid arch member to which curved side wings are adjustably connected, the upper adjacent ends of which side wings are in use lapped by-means of a top cap, and a lower trip gate hin'gedly connected to the arch member, the series of trip gates being connected with'one another so that by the use of a suitable lever, or even without the use of such lever, the several trip gates within a finished culvert, may be moved on their hinged connections to withdraw the support of the arch members, which the trip gates constitute, thus permitting the arch members with their side wings and the top cap to lower, the connections between the several trip gates providing for the subsequent withdrawal .of the trip gates and the arch members carried thereby from within the finished culvert. i

As seen in Figs. 1 to 6 inclusive, in which a skeleton structure is shown, it'will be seen that the rigid arch member is in the form of a substantially inverted 'U-shaped strip B, connected by a cross strip, B between its extensions, and provided with a plurality of bearings B inwardly through which project rods C from the side wings C, the bearings having set screws 6 whereby the adjusting rods C may be engaged at selected points to maintain the side wings C suitably spaced from the sides of the arch member B.

The lower extensions of the strip B forming this arch member are provided with lateral apertured projecting pieces B which receive the extremities of a cross rod D, passing also through similar apertured projections E of the trip gate E, so as to form hinged connect-ions between the trip gate E at its opposite ends and the arch member, permitting the trip gate to assume either the vertical operative position as shown in Figs. 1 and 2, or the horizontal'inoperative position as shown in Figs. 3 and 1, preparatory to the withdrawal of the culvert support.

A longitudinally extending and transversely curved top cap- F connects the upper adjacent ends of the two side wings C, and may rest either directly upon the thus lapped ends of the side wings or upon the mold boards A disposed on the side wings as shown respectively in Figs. 3 and 1.

Each of the trip gates E is substantially rectangular in form and of skeleton structure and, in addition to its end hinge plate E, is mounted upon rollers E which may travel upon beams G forming tracks as clearly seen in Figs. 1 to 3 inclusive, the ends thereof being further provided with extending hooks E asbest seen in Figs. 5 and 6, in order to provide for the reception of side links H in the form of eye rods, the hooks E projecting from both sides of the trip gate for this purpose. The lower portion of each of the trip gates is also pro vided with a central slot E and with extending pieces E upon opposite sides of the slot having recesses E for the reception of laterally projecting pins I of the sections I of the draw bar utilized either with the connecting eye rods I-I before mentioned or independent thereof.

As best seen in Figs. 2, 4:, and 12, the sections of the draw bar I are provided at their ends with laterally offset downturned flanges I projecting in relatively opposite directions with respect to adjacent ends of the sections, in order that the said sections may be detachably held in engagement, the several sections so joined extending through the slots E of the several trip gates E as best seen by reference to Fig. l, with their laterally projecting pins I disposed in the recesses Fl of the extensions E of the trip gates, so that with the trip gates in their vertically operative positions as shown in Figs. 1, 2, and 5, a pull upon the outer end of the draw bar results in movement of the several trip gates connected as before described, to horizontal positions as shown in Figs. 3 and 4, such movement resulting in lowering movement of the arches and side wings whereby to permit ready withdrawal of the mold boards A and subsequent withdrawal of the several supports including the arches and the trip gates as before described, leaving the finished culvert.

In order to move the draw bar and effect withdrawal of the several supports as just described, a lever such as shown in Fig. 10, may be employed, this lever J being intermediately pivoted at y' to the ends of brackets J extending from a cross piece J", the latter of which may extend transversely across one finished end of the culvert, as clearly seen in Fig. i, the lower end of the lever J being laterally oiiset as shown at j and provided with a supplemental piece forming a slot across which a pin j as best seen in Figs. 10 and 11, is secured, this pin being adapted to enter a selected one of the recesses at one end of the draw bar I which, as plainly seen in Fig. l, is provided with a series of such recesses as shown at I the lower end of the lever J straddling the draw bar when so engaged. Thus with the parts in this position, inward movement upon the upper handle end of the lever results in longitudinal outward movement of the draw bar, and consequent lowering movement of the several arches to their inoperative positions shown in Figs. 3 and 4:;

As shown in Figs. 7 and 8, the rigid arches may be in the form of substantially semi-circular solid members K and K respectively, in which case they are connected to the upper portions of the trip gates by hinges K and K the side wings of the member K shown in Fig. 7, and indicated at L, being provided with inwardly extending slotted adjusting arms L, through the slots of which are extended adjusting bolts of the arch member K, these bolts operating to clamp the adjusting arms in selected position.

In Fig. 8 the side wing M is shown as provided adjacent its upper end with an inwardly projecting arm pivotally connected at m to the upper portion of the arch member, this side wing having a lower inwardly projecting arm M provided with a series of apertures m with a selected one of which a transverse pin 70 of the arch member may be engaged in order to hold the side wing in adjusted position.

From the foregoing it will be seen tha the supports I have shown for the purpose described, are capable of ready and easy collapsing movements and withdrawal from a completed arch, and in view of the wide range of adjustment of the side wings of the several arch members, connected in each adjusted position, as they are by means of the top cap F, arches of one size may be used for molding culverts of considerably increased dimensions with respect thereto,

so that the necessity of providing diiferent sizes of arch members where a culvert of increased dimensions is desired, is entirely done away with.

The several supports when placed in 0perative position as shown in Figs. 1 and 2, are rigidly held by the connections between the several trip gates, and by the mold boards disposed thereon and connecting the same, and yet at the same time may, as before stated, be readily tripped to inoperative position by the use of the lever J or by other means engageable with the draw bar I or with the outer trip gate of a series ible supports for mold boards, each of which supports consists of a rigid arch member, a pair of side wings having adjustable connection with the sides of the arch member for movement toward and away from the same, a curved top cap connecting the upper adjacent ends of said side wings and cooperating with the latter to support the mold boards, a roller mounted trip gate beneath and hingedly connected to the arch member, and connections between the several trip gates whereby they may be simultaneously moved upon the said hinged connections to inoperative positions.

2. In a culvert form a plurality of collapsible supports for mold boards, each of which supports consists of a rigid arch memher, a pair of curved side wings disposed at the sides of the arch member and having inwardly projecting adjusting arms, means carried by the arch member for adjustably holding the arms of the side wings whereby to support the latter in selected positions with respect to the sides of the arch member, a curved top cap connecting the upper adjacent ends of said side wings and cooperating with the latter to support the mold boards, an adjustable support beneath and hingedly connected to the arch member, and connections between the adjustable supports of the several arch members whereby they may be simultaneously moved to inoperative positions.

3. In a culvert core, a plurality of collapsible supports for mold boards, each oi which supports consists of a rigid skeleton arch member comprising an inverted U- shaped body strip and a connecting cross strip, the body strip being provided with a plurality of tubular bearings, curved side wings disposed at the sides of the said arch member and having inwardly projecting adjusting rods extending through the said bearings, set screws threaded into the bearings and engageable with the said adjust ing rod to hold the side wings in selected adjustment with respect to the sides of the arch member, a curved top cap lapping the upper adjacent ends of the side wings to cover the space therebetween, an adjustable support for the arch member hingedly connected thereto, and connections between the several supports whereby they may be simultaneously adjusted to inoperative positions for the purpose described.

45. In a culvert core, a plurality of collapsible supports for mold boards, each of which supports consists of a rigid arch member, adjustable side wings carried by the arch member, a top cap connecting the upper adjacent ends of the side wings and Copies of this patent may be obtained for bridging the space therebetween, a substantially rectangular trip gate hingedly connected to the lower portion of the arch member and adapted to normally assume a vertical position therebeneath in use, rollers carried by the trip gate, tracks upon which the rollers are mounted, to permit of ready movement of the trip gate to horizontal inoperative position, connections between the trip gates of the several supports whereby the trip gate may be simultaneously moved to inoperative position, said connections being in the form of a draw bar in sections, means carried by the sections of the draw bar whereby they may be detachably united in use, and means for actuating the draw bar in order to simultaneously move the several trip gates.

5. In a culvert core, a plurality of collapsible supports for mold boards, each of which consists of a rigid arch member, adjustable. side wings carried by the arch member, a top cap connecting the upper adjacent ends of the side wings, a trip gate below and hingedly connected to the arch member and provided with hook members extending in relatively opposite directions from the ends thereof, eye rods engageable vwith the said hook extensions of adjacent trip gates whereby to connect the same throughout the series of supports and permit of their simultaneous movement to inoperative positions, rollers carried by the said trip gates, and tracks upon which the rollers are disposed whereby to permit of ready movement of the several trip gates to inoperative positions.

6. In a culvert core, a plurality of collapsible supports for mold boards, each of which supports consists of a rigid arch member, adjustable side wings carried by the arch member, a top cap connecting the upper adjacent ends of the side wings, a roller mounted trip gate disposed below and hingedly connected to the arch member and provided with a lower intermediate slot and with projecting members at opposite sides of the said slot having recesses therein, a draw bar consisting of a plurality of detachably connected sections having laterally projecting pins :tor engagement in the recesses of the said trip gate extensions, and

a lever engageable with the draw bar whereby to actuate the same and simultaneously move the several trip gates to inoperative positions.

ARTHUR E. CAMBLIN.

'Witnesses:

' J. R. CAIN,

E. C. ROBERTS.

five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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