US1220075A - Scraper arrangement for sewers and the like. - Google Patents

Description

H. A. CUTLER.

SCRAPER ARRANGEMENT FOR SEWERS AND THE LIKE.

APPLICATION FILIFD MAY 18. 1916. 1,220,075.

Patented Mar. 20, 1917 2 SHEETS-SHEET I.

H. A. CUTLER.

SCRAPER ARRANGEMENT FOR SEWERS AND THE L|KE. APPLICATION FILED MAY 18. 1916.

1,220,075. Patentd Mar. 20,1917.

2 SHEETS-SHEET 2- k x W UNITED STATES PATE OFFICE.

HENRY ALBERT CUTLER, or BELrAsr, IRELAND.

SCRAPER ARRANGEMENT FOR SE'WERS AND THE LIKE.

Application filed May 18, 1916. Serial N 0. 98,325.

To all whom it may concern:

Be it known that I, HENRY ALBERT CUT- LER, a subject of the King of Great Britain and Ireland, residing at Belfast, in the county of Antrim, Ireland, have invented Improvements in Scraper Arrangements for Sewers and the like, of which the following is a specification.

The object of the present invention is to provide -an improved scraper arrangement for removing, in a reliable and expeditious manner, deposit from sewers and other pipe or conduit systems.

To this end the scraper arrangement comprises a scraper blade so hinged to a drawbar or frame and having associated therewith position controlling means that the blade is caused to fold down against the drawbar vor frame when the scraper is be ing drawn into a sewer or pipe and to take up an operative scraping position when the movement of the drawbar or frame is reversed in direction.

In the accompanying drawings Figures 1 and 3 are longitudinal sectional views of part of a sewer illustrating one arrangement according to the invention in the inoperative and operative position respectively. Fig. 2 is a plan corresponding to Fig. 1. Figs. 4c, 5 and 6 are views similar to Figs. 1, 2 and 3 of a modification.

As shown in Figs; 1 to 3 inclusive,-a blade a, b approximating in shape that of the interior cross section of the sewero or the like to be cleared, is ofiset in the region of a hinge boss cZ so that one portion a of the blade can be caused to lie flat against one side, and the other portion 6 of the blade fiat against the opposite side, of a frame e while the scraper is being inactively drawn into the sewer as depicted in Figs. 1 and 2.

The frame 6 (referred to in the claims as a draw bar) may advantageously comprise two side members splayed intermediate of their length as at f to give a good hinge pin bearing and in contact with each-other for a relatively great length at each end so as to constitute in efiect a rod which will tend to remain more or less parallel to the axis of the sewer when the scraper is being drawn into or out of it. 6 represents a distance tube mounted upon the hinge pin 9 and extending between the splayed portions of the side members of the frame. In use it is preferred that the frame should occupy a position where one portion 7) of the blade is below and the other portion 7 the scraper is in use. If desired guards may be provided to prevent the scraper blade sinking into'open joints in sewers or V pipes.

The blade may be moved into and out of scraping position by connections made to a pair of lines one of which, namely i is adapted to draw the scraper into the sewer and the other to drawit out. For example a wire or chain is may be attached, as by a fitting m, to the upper scraper portion a, near its topmost edge, the pull of the line 2', that is to draw the scraper into the sewer, being transmitted to the scraper connection it which is shown as passing through an eye a at one end of the frame 6. A similar connection extends between the upper blade portion a and the opposite line jexemplified as a chain attached to the corresponding end of the frame 6, such connection consisting of a tie 0 extending from some point inthe chain j to the blade.

The operation of the scraper is as follows The line i is first passed through the section of sewer or pipe to be cleaned and attached to the connection it which passes through the eye n at the forward end of the bar or frame e and the chain 7' is at- Fig. 3 and then draws the scraper with the deposit to the point. at which the scraper entered. The operation can be repeated in-' definitely the scraper being pulled farther into the sewer or pipe as the deposit is removed, until the whole section is clear.

a regular edge and resemble a disk, or it may be formed with teeth; also the frame of the scraper may be oifset instead of the blade;

the axis'of the bar or frame 6 as shown in V As will be understood the blade may have,

while in lieu of or in addition to the upper half of the blade herein referred to, an extension arm may be employed with a roller at its upper extremity the distance of which from the axis of the blade can be varied so as to alter the vertical diameter of the scraper. The connections to the various lines may extend from the roller pin on th arm, the purpose of the arm being to move a blade into and out of operative po 'ition.

These various modifications are embodied in the example illustrated by Figs. 4, 5 and 6 where adjustable brackets a constituting an arm carrying a roller r extending above a toothed scraper blade Z1 have associated. with the roller pivot pin a, a pair of links t to which the operating lines 7': and 0 are connected as through pins u. The frame 0 is shown ofiset at 6 What I claim is 1. Means of the kind described, comprising a draw bar, a scraper hinged thereto, lines for moving the draw bar alternately in opposite directions and position-controlling means associated with the scraper, draw bar and lines, adapted to cause the scraper to fold down against the draw bar upon movement of the latter in one direction and to take up an operative scraping position when the movement of the draw bar is reversed.

2. In combination, a scraper provided with a hinge boss, a draw bar having laterally splayed parts intermediate of its length to provide a hinge pin bearing, a hinge pin connecting said scraper to such draw bar at the bearing, a pair of lines respectively associated with opposite ends of the draw bar, and means whereby movement of the adjacent end portion of either line in a direc tion away from the draw bar will result in an angular movement of the scraper in relation to such draw bar.

3. In combination, a draw bar, a scraper pivoted to such draw bar, a line by which the draw bar can be pulled in one direction, a line by which the draw bar can be pulled in the opposite direction and ties connected to the respective lines and adapted to impart an angular movement to the scraper in one or other direction in relation to the draw bar vas either of such lines is made taut.

A. In combination, a draw bar having an eye at each end, a scraper blade pivoted to such draw bar, a line fixed to one eye of the draw bar, a tie between such line and the scraper, another tie extending in an opposite direction trom the scraper and free to slide through the eye at the other end of the draw bar and a second line secured to the end of such tie, substantially as described.

5. In combination, a scraper blade a draw bar comprising two side members splayed intermediate of their length to provide a hinge pin bearing, a hinge pin connecting said blade to such draw bar, a stop arrangement upon said scraper blade adapted to engage the draw bar and limit turning movement of the blade in one direction relative thereto, lines for moving the drawbar alternately in opposite directions and position controlling means associated with the blade, draw bar and lines, adapted to cause the blade to fold down against the draw bar with movement of the latter in one direction and to take up an operative scraping position when the movement of the draw bar is reversed.

6. In combination, a scraper blade a draw bar conn rising two side members splayed intermediate of their length to provide a hinge pin bearing, and offset in the region of such bearing a hinge pin connecting said blade to such draw bar, a stop arrangement upon said scraper blade adapted to engage the draw bar and limit turning movement of the blade in one direction relative thereto, lines for moving the dra-wbar alternately in opposite directions and position controlling means associated with the blade, draw bar and lines, adapted to cause the blade to fold down against the offset portions of the draw bar with movement of the latter in one direction and to take up an operative scraping position when the movement of the draw bar is reversed.

'7. In combination, a draw bar, a scraper pivoted to such draw bar, a line by which the draw bar can be pulled in one direction, a line by which the draw bar can be pulled in the opposite direction a roller, means adjustably connecting the roller to the scraper and ties connected to the respective lines and roller carrying means and adapted to impart an angular movement to the scraper through such means in one or other direction in relation to the draw bar when either of such lines is made taut.

8. In a scraper arrangement for sewers and the like a draw bar a scra 361 hin ed to HENRY ALBERT CUTLER.

Witnesses JoirN ARCHER, Tnos. J MoKnowN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

Images