US624507A

US624507A - Anchor for dredges

Info

Publication number: US624507A
Authority: US
Publication date: 1899-05-09
Anticipated expiration: 1916-05-09

Description

No. 624,507. Patented may 9, |899.'

' H. c. LEHMAN. 4

ANCHOR FDR DiEDIES.A

(Applicatox filed Feb. 8, 1899.)

(No Model.)

2 Sheets-Sheet I.

me Nonms mans co. PHuroL|THa,. wnsumsrou. n. cv

No. 624,507. 4 Patented May 9, |899.

H. C. LEHMAN.

ANUHUB FOR DBEDGES.

(Application filed Feb, 8, 1899.) (No Model.) 2 Sheets-Sheet 2.

HUGS-SGS /y @Ie/2221092@ 193291@ mi Ncnms Pmns cc.. pHoro-urne., wAsMmaToN. u. c.

Nr-TED STATES` 'PATENT OFFICE.

HENRY C. LEHMAN, OF MIDDLEBURY, INDIANA.

ANCHOR FOR DREDGES.

SPECIFICATION forming part of Letters Patent No. 624,507, dated May 9, 1899.

Application filed February 8, 1899. Serial No. 704,925. lllo model.)

To all whom it pta/y 0072.067171.:

Be it known that I, HENRY C. LEHMAN, a citizen of the AUnited States, residing at Middlebury, in the county of Elkhart and State of Indiana,vhave invented a new and vuseful Anchor for Dredges, of which the following is a specification.

My invention relates to anchors for dredges and other excavating machinery which employ a swinging crane or boom to carry an excavator mechanism adapted to deposit the excised material on a spoil-bank at one side of the line of the stream or other excavation.

The chief object of the present improvement is to provide an anchor mechanism of comparatively simple construction in which the barge, scow, or other carrier for the operating mechanisms may be held stationary against swaying due to thel lateral swinging of the crane or boom.

A further object of the invention is to provide an improved arrangement of parts, 'which y may be operated with a minim um expenditure of power and be readily adjusted to the grade of the banks and to inequalities in the surface of the ground in order to secure a firm bearing for the anchor-shoe on the bank.

Y A further object ofthe invention is to provide an improved type of beam for the anchorshoe in which the jointed beam members are adapted to be interlockedin firm relation one to the other when the anchor is adjusted for service.

IVith these ends in View the invention consists in the novel combination of elements and in the const-ruction and arrangement of parts, which will be hereinafter fully described and claimed.

To enable others to understand the invention, I have illustrated the preferred embodiment thereof in the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a front elevation of a dredger with my anchor mechanism applied thereto. Fig. 2 is a plan view of one part of the anchor mechanism. Fig. 3 is a vertical section 4through the structure represented by Fig.

2 and on the plane indicated by the dotted line 3 3 of Fig. 2. tail transverse section through the hinged guide for the slidable shoe-beam, the4 plane Fig. 4 is an enlarged deof the section being indicated by the dotted line 4 4 of Fig. 3. Fig. 5 is a detail perspective view of the shoe, illustrating the universal-joi nt connection of said shoe with its beam. Fig. 6 is a detail perspective View of the joint which unites the two members of the shoebea-m. Fig. 7 is a. modified form of clevis for supporting and guiding the anchor-beam.

Like numeralsof reference denote like and corresponding parts in cachot the severalfigures ot' the drawings.

In order that others Amay understand the present. improvement, I haveillustrated the same in connection with a familiar type of dredger, the barge or scow of which is indicated by the numeral lO, the swinging boom or crane at ll, and the bucketexcavator at 12; but I would have it understood that while my anchor mechanism is well adapted for use in connection with a dredger I do not strictly limit myself to the employment of the anchor mechanism in connection with an excavator apparatus of this character, because I am aware that the anchor mechanism may be used in connection with excavator machinery generally to hold the carrier or frame thereof from Vibration or displacen1ent,wl1ich may be due to the swingingofa boom or crane.

In carrying my invention into practice in connection with a dredger I employ two pairs of vertical posts 13 14, which are erected on opposite sides of the barge-and are firmly secured thereto, and these uprights are braced by a cross-beam l5, which extends horizontally across the roof of the barge and is firmly l are spaced to receive the slidable shoe-beam between themselves, and said

plates

20,21 are united bya series of bolts 23 24. The `bolts IOO 23 are fastened to the guide-plates near the u pper edges thereof, while the other bolts 24 are fastened to the guide-plates at their lower edges to serve as supports or rests for the slidable shoe-beam.

yThe shoe-beam on one side of the barge or scow is indicated by the numeral 16, while a similar beam on the opposite side of the barge or scow is indicated by the numeral 17. These shoe-beams are independent one from the other, and each beam is equipped with an anchor-shoe 18, the construction of which and the hinge-joint between said beam and the shoe will be hereinafter described. Each shoebeam is slidably fitted between a pair of the guide-plates 20 21, and it is confined therein by the bolts 23 24, and said guide-plates for each beam are mounted pivotally on the pair of vertical points or uprights 13 14.. By thus mounting the shoe-beam it is free to slide in an endwise direction through the guide-plates,

Vand the guide-plates form a hinge or pivotal connection between the fixed posts and the slidable beam, whereby the beam may assu me different angular positions with relation to 'the vertical post and the barge, and thus accommodate itself to the grade of the bank upon which its anchor-shoe 1S is designed to rest.

Each shoe-beam 16 or 17 is provided with a pair of holding-plates 25, whichl extend longitudinally of the beam for a proper distance and are secured firmly to opposite faces of the beam by the bolts 26. The plates 25 are parallel to each other and have their upper edges extended above the top face of the beam. In these extended upper edges of the plates are formed a plurality of notches, which produce the series of coincident teeth 27, and these teeth have rounded working edges and beveled neutral edges, (indicated at 23,) such beveled edges insuring the free outward movement of the shoe-beam with relation to the locking-bail or clevis 29. This locking-bail is pivoted at 29 in the Wear-plates 19, which are fixed tothe pair of vertical posts, so that the locking-bail is adapted to drop into engagement with the rounded edges of the teeth 27 on the plates 25 of the shoe-beam to sustain the inward thrust of the shoe-beam and prevent the inward movement of said beam when the anchor is in service. This lockingbail or clevis is provided with a weighted arm 30, arranged to normally press the bail in engagement with the teeth 27 of the beam-plates 25, and said bail may be lifted from engagement with the teeth by permitting the weighted end of the arm 30 to rest on the cross-sill 15 when the shoe-beams are raised, whereby the cant of the weighted arm 30 is arrested by the beam and the locking-balls are disengaged automatically from the toothed plates of the shoe-beams on the elevation of thelatter in order to permit the beams to be drawn inwardly for adjusting the same.

Each shoe-beam is made of two sections, which are hinged or jointed flexibly together to adapt the outer section to adjust itself to the grade of the bank and enable the anchorshoe to obtain a firm bearing on the bank. The lower or outer section of each shoe-beam 16 or 17 is indicated by the numeral 32, and the two sections of the

beam

16 or 17 and 32 are joined together by -a hinge, which is indicated in its entirety by the numeral 33. This hinge consists of a pair of plates 34, which are fastened to the beam-sections 16 or 17, another pair of plates 35, bolted to the beam-section 32, and a pivotal bolt 36. The two pairs of plates 34 35 on the two sections of the jointed beam are arranged to overlap each other, and thereby enable the pivotal bolt 36 to pass through the protruding ends of both pairs of plates and to extend through the-space at the contiguous ends of the beamsections. One of the important features of my invention is a novel construction of this hinge, by which the two beam-sections may be interlocked firmly together against any tendency to collapsing when the anchor is adjusted for service, and to this endl provide the hinge-plates 34 with locking-arms 37, which are extended beyond the pivotal bolt 36 and are adapted 'to bear firmly against the studs 38 on the hinge-plates 35.

Each anchor-shoe is preferably constructed of two series of bars 18n 1S, which are arranged at right angles to each other and in different horizontal planes to provide a substantial light construction of the shoe and secure an extended bearing-surface without increase in the weight of said shoe. Each shoe is coupled to the free extremity of the lower beam-section 32 by means of a universal hinge-joint, that adaptstthe shoe to assume different positions relatively to the beam and to obtain a firm bearing or rest on the irregular surface of the bank. The beam-section 32 is provided at its outer extremity with a pair of projecting hinge-plates 39, which are bolted firmly to the beam-section 32, and

ICO

IIO

on the anchor-shoe is provided a transverse hinge-bar 40. This hinge-bar is provided at its middle. with a pair of plates 41, which are bolted firmly to said bar 40 and -extend upwardly therefrom to overlap the hinge-plates 39,and through these hinge-plates 39 41 passes a hinge-bolt 42, which pivotally connects the two pairs of plates together. The hinge-bar 40 is arranged centrally on the anchor-shoe 13, and it is connected loosely thereto by a plurality of staple-shaped bolts 43, whichembrace the bar 40 and are secured firmly to the series of bars forming the anchor-shoe. It will be observed that the pivotal bolt 42 and the Vhinge-bar 40 lie at right angles to each other, and these elements with their coacting parts provide a universal joint between the anchor-shoe and the beam -section 32. This universal joint adapts the anchor-shoe to be turned to different angles or positions for the purpose of securing a firm bearing on the ground, and the jointed beam is pivotally connected with the shoe by the bolt 42 ends thereof, by 'horizontal braces 44.

624,507 i i 'e to enable the beam-sections to be drawn in line with each other without disturbing the position of the anchor-shoe or displacing it on the ground. i

The outer end of the shoe-beam is connected with the

vertical posts

13 or 14, near the lower The braces are fitted loosely to the hinge-bolt 42, and at their inner ends they are connected adj ustably to the pair of posts by a bolt `43, which passes through the posts and may be fitted in any one ot a series of apertures which are provided in the braces 44 near their inner ends.

To stay the shoe-beams against lateral vibration due to lnovement of the scow or barge, and thereby obviate undue strain on the hinge-joints of the beams and the parts which. coact therewith, I provide a guideframe on each side of the barge to slidably receive the shoe-carrying beam 16 or 1.7. This guideframe consists of a pair of horizontal timbers45 and the inclined struts 4G. The horizontal timbers are united to the vertical posts 13 14 by the hinge-plates 47, while the inclined struts 46 are fastened firmly to the uprights or posts by bolts, as at 48. The slidable inclined beam is Iitted between the struts and the timbers ofthe guide-frame, and this frame is provided at its outer end with a loose guide pulley or sheave 4E). Over this pulley passes an elevating-cable 50, which has oneA end attached to a clevis 51, loosely connected to the hinged joint 33 between the members of the sectional shoe-beam or to the beam 1G or 17.-l This elevating-cable extendsto and is passed around a sheave 52, which is provided on the barge or scow, and the sheaves for the two cables are situated at or near the bow in the middle-of the deck von the barge or scow. A haulage-cable 53 is attached to a clevis 54, which is loosely fitted on the hingebolt 3G, which connects the plates of the hinge 33, that unites the two members of the shoebeam, and this haulage-cable is passed on a .sheave 55 and is then coiled on a drum 56,

which is situated across the deck at or near the middle of the barge, and which drum is operated by engine-power of the barge for the purpose of drawing on the series of cables in order to bring the two members of the shoe-beam into alinement with each other for the purpose of raising the barge or scow and imposing a portionof the weight of the dredger on theanchor beams and shoes. The

\ cables 53 from the two anchor-beams are thus guided individually by the sheaves to the single drum 55, and this drum is arranged to operate all of the cables.

The operation of my apparatus may be described as follows: The dredger having assumed the desired position, the series of cables are slackened,an d the anchor-beams and the shoes thereof are allowed to slide endwise in the pivotal guide-plates and the guideframes, so that the shoes maybe extended or projected a proper distance beyond the sides of the dredger. These shoes are adapted to rest rmly on the banks of the stream. or eX- cavation, and the braces 44 are adjusted to connectl the lower ends of the hinged sectional beams 16 17 with the uprights or posts 13 14. The locking-bails or clevises 29V engage with the toothed plates of the anchorbeams to prevent inward .movement thereof, and these locking-hails transmit the inward thrust of the anchor-beams to the uprights or posts 13 14. The haulage-cables 53 are now drawn inwardly by the drum for the purpose of bringing the members of the hinged anchor-beams into line with each other, and the movement of each beam-section islimited or arrested by the arms 37 engaging with the studs'38. It will be observed that each anchor-beam has its lower end pivoted to the anchor-shoe, while its upper end is supported by guide-plates, which have pivotal connection with the fixed posts or uprights, whereby the beam-sections are adapted to turn when the cable 53 is drawn taut, and thus permit the beam-sections to assume the .alined positions without torsional strain on the parts of the apparatus. The operation ofstraightening the jointed anchor-beams by the action of the haulage-cables 53 serves to raise the dredge a limited distance-say about a footin the water, and a portion of the weight of the dredger is thus imposed on theanchor-beams and the shoes, whereby the dredge is anchored iirmly in place against tendency to- IOO ward lateral displacement owing to the swinging of the crane or boom when depositing the excised material upon the bank.

In lieu of the pivoted plates and the series of bolts therein to serve as the pivotal support torV the slidable inner members of the shoe-beams I may use the pivotal bail 53. (Shown by Fig. 7 of the drawings.) This bail 5S is arranged between the pair of uprights and is pivotally connected thereto, and in the bail rests the inner member of the sho'e-beam so that it may slide in the bail and is held in place thereby for the locking-bail to engage with the notched plates on the shoe-beam.

Changes may be made in the form and proportion of some of the parts, while their essential features are retained and the spirit of the invention embodied. Hence I do not desire to be limited to the precise form of al1 the parts as shown, reserving the `right to vary therefrom.

What I claim is- 1. In an anchor for excavators, the combination with an upright or post, of a jointed anchor-beam slidably confined on said post or upright, a shoe connected to the outer extremity'of said jointed beam, means for applying strain to the joint of said sectional beam, and a locking device to sustain the inward thrust of the beam and shoe, substantially as described.

2. In an anchor for excavators, the combination with a post or upright, of a pivotal guide supported thereon, a jointed anchor- IIC beam slidably confined in said guide, and a locking device to sustain the inward thrust of the anchor-beam, substantially as described.

3. In an anchor for excavators, th'e combination with a post or upright, ot' an anchorbeam slidably fitted to said post or upright, and an anchor-shoe united by a universal joint to the outer extremity of the anchorbeam, substantially as described. 4

4. In an anchor for excavators, a jointed sectional anchor-beam having its members joined together by a stop-hinge constructed to limit the movement of the beam members when alined, in combination with apost or upright on which one of the beam members is slidably confined, an anchor-shoe connected to the free extremity of the -other beam member, and a haulage-cable connected with the hinged joint between the beam members, for the purpose described, substantially as set forth.

5. In an anchor for excavators, a sectional anchor-beam and a stop-hinge consisting of plates applied to the contiguous ends ot the beam members, a pivotal bolt connecting the hinge-plates, and coacting stop devices on the respective hinge-plates to limit the movement of the beam members when alined with yeach other, in combination with a post or the other beam member, a haulage-cable, and` a clevis connecting said haulage-cable with the pivotal bolt of the stop-hinge, substantially as described.

6. In an anchor for excavators, the combination with uprights or posts, of connected guide-plates pivotally supported in said posts, an anchor-beam provided with a rack and slidably fitted -Within said connected plates to be supported pivotally thereby on said posts, a shoe carried by said beam, and a lockingdetent supported by the posts and arranged to engage with the rack, substantially as described.

7. In an anchor for excavators, the combination with uprights or posts,vof wear-plates fixed to the opposing faces of said posts, connectedguide-plates pivoted to the posts and lying within the wear-plates thereon, an anchor-beam provided with a rack and slidably fitted within the pivotal plates, a shoe carried by the beam, and a locking-bail hung on the posts for engagement with the rack and provided with a weighted arm, substantially as described.

8. In an anchor for excavators, the combination with an upright or post, of a sectional jointed anchor-beam supported on said upright for slidable and pivotal movement thereon, a shoe carried by the outer end of said jointed beam, an elevating-cable connected with said beam near the joint between its members, and a haulage-cable connected to the joint between the members ot said beam, substantially as described.

9. In an anchor for excavators, the combination with an upright, of a sectional jointed anchor-beam, a guide-frame carried by said upright and slidably receiving the jointed anchor-beam, a shoe mounted on the anchorbeam, an elevating-cable guided by the frame and connected to the anchor-beam, and a haulage-cable connected with the sectional beam at the joint thereof, substantially as described.

l0. In an anchor for excavators, the combination with an upright, of a guide-frame supported thereon, a jointed sectional anchorbeam slidably iitted to the upright and the guide-frame, an elevating-cable guided on lsaid frame and having a .clevis which is connected with the anchor-beam, a haulage-cable connected to the joint of said sectional beam, and a shoe having a jointed connection with the outer end of the sectional beam, substantially as described.

ll. In an anchor for excavators, the combination with an anchor-beam, of va shoe, a hinge-bar pivoted on said shoe, and a hingepintle lying at right angles to the hinge-bar and connected to said beam and the bar, substantially as described.

l2. In an anchor for excavators, the-combination with an anchor-beam, of the hingeplates fixed thereto, a shoe, a hinge-bar pivoted on the shoe and provided with hingeplates, and a pintle or bolt lying at right angles to the hin ge-bar and connecting the plates of the beam and said bar, substantially as described.

13. In an anchor for excavators, the combination with uprights, an anchor-beam, and a shoe, of a universal joint betweenthe shoe and beam, and braces connected to the nprights and to one of the hinge-bolts of the1 universal joint, substantially as described.

In testimony that I claim the foregoing' as my own I have hereto affixed my signature in the presence of two witnesses.

HENRY C. LE HMAN.

Witnesses: I

CHARLEs E. COMPTON, JOHN H. MILLER.

IOO