US2697875A - Ratchet handle pipe cutter - Google Patents

Description

Dec. 28, 1954 A. MOIVEYR RATCHET HANDLE PIPE CUTTER Filed Dec. 51, 1952 United States Patent RATCHET HANDLE PIPE CUTTER V I Americus McIver, Bronx, N. Y. Application December 31, 1952, Serial No. 328,870

2 Claims. (Cl. 30-102) This invention relates to ratchet handle pipe cutters.

It is an object of the present invention to provide a ratchet handle pipe cutter which includes a hinged, closable ring containing adjustable pipe cutting elements, the central periphery of said ring on the outer side thereof being formed with rachet teeth which cooperate with a plurality of spring urged ratchets carried by a separable, hinged handle ring closable on said first ring and fixedly connected to an elongated handle.

It is another object of the present invention to provide a ratchet handle pipe cutter of the above type including a pipe cutting element and cooperating, pipe-supporting rollers which are adjustable relative to each other to accommodate pipes of varying diameters.

It is still another object of the present invention to provide a ratchet handle pipe cutter of the above type into which a pipe to be cut may be conveniently inserted.

Other objects of the present invention are to provide a ratchet handle pipe cutter of the above type and hearing the above objects in mind which is of simple construction, inexpensive to manufacture, has a minimum number of parts, is compact, durable, is easy to use and efficient in operation.

For other objects and for a better understanding of the Y invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Fig. 1 is an end elevational view of a ratchet handle pipe cutter embodying the features of the present invention;

Fig. 2 is a vertical sectional view taken along line 22 of Fig. l and showing the outer, handle ring broken away to show the interior construction thereof;

Fig. 3 is a vertical sectional view taken along line 3-3 of Fig. 1 but with the outer, handle ring removed and showing the inner ring in an open position and Fig. 4 is a view similar to Fig. 3 but with the inner ring removed.

Referring more in detail to the drawing, in which similar reference characters identifying corresponding parts throughout the several views, there is shown a ratchet handle pipe cutter, referred to collectively as 10, and including an inner cylindrical member consisting of segments 11 and 12 hingedly connected by a pin 13, substantially as illustrated.

The free ends of segments 11 and 12 are integrally formed with ears 13 near each end thereof which receive lock screws 14 whereby to secure the segments together, as shown in Figs. 1 and 2.

The inner face of segment 11 fixedly carries a pair of laterally aligned, substantially L-shaped brackets 15 which rotatably mount a cutting disc 16. The segment 12 diametrically opposite from the disc 16 is provided with a pair of internally threaded hubs 17 which receive ad ustment screws 18, the inner ends of which fixedly carry triangular brackets 19. As shown in Fig. 1, the brackets 19 are of channel cross section and rotatably mount rollers 20 near each end of segment 12.

The central, outer periphery of segments 11 and 12 are integrally formed with ratchet teeth 21, substantially as illustrated.

An elongated handle 22 is integrally formed at one end with a pair of arcuate segments 23 adapted to enclose a portion of cylinder 11, 12 and to receive therebetween the outwardly extending ratchet teeth 21, as shown in Fig. 1. The outer ends of segments 23 are pivotally connected to arcuate segments 24 and 25 by means of ice pins 26. The segments 23, 24, 25 are adapted to completely enclose the cylinder 11, 12, as shown in Fig. 2. the free ends of segments 24 and 25 being integrally formed with ears 27 which receive lock screws 28 whereby to secure the segments 23, 24, 25 about the cylinder 11, 12, with ratchet teeth 21 therebetween.

There is provided a ratchet connection between the segments 23, 24, Hand cylinder 11, 12 which may be of any suitable form. This ratchet connection has been shown in the drawing to consist of the ratchet teeth 21 and a pair of suitable, spring- urged ratchets 29 and 30, the ratchet 29 being mounted intermediate the spaced, parallel. segments 24 while the ratchet 30 is mounted intermediate the spaced, parallel segments 23 directly above handle 22.

In operation, the cylinder 11, 12 is opened, as shown in Fig. 3, to receive the pipe 31 therewithin between supporting rollers 20 and cutting disc 16, the cylinder 11, 12 then being closed by means of ears 13 and lock screws 14, as shown in Fig. 2. The screw 18 will be adjusted to raise or lower the rollers 20 until the pipe is properly positioned against the cutting disc 16. It will be noted that this adjustment permits the device to be used on pipes of varying diameters.

With the pipe thus positioned, the segments 23, 24, 25 are assembled about the cylinder 11, 12, as shown in Fig. 2, with the teeth 21 therebetween and the ratchets 29 and 30 in mesh with the latter. The segments 23, 24. 25 are then secured in the aforementioned position by means of lock screws 28 as will be obvious, the pipe then being ready for cutting by angular movement of handle 22.

When it is desired to insert a new pipe, the above operations are reversed to bring the new pipe into the cutting position. 1

It should now be apparent that there has been provided a ratchet handle pipe cutter which includes a hinged, closed ring containing adjustable pipe cutting elements, the central periphery of said ring on the outer side thereof being formed with ratchet teeth which cooperate with a plurality of spring-urged ratchets carried by a separable, hinged handle ring closable on said first ring and fixedly connected to an elongated handle. It should also be ap' parent that there has been provided a ratchet handle pipe cutter of the above type including a pipe cutting element and cooperating, pipe-supporting elements or rollers which are adjustable relative to each other to accommodate pipes of varying diameters, and between which a pipe to be cut may be readily and easily inserted.

While various changes may be made in the detailed construction, it shall be understood that such changes shall be within the spirit and scope of the invention as defined by the appended claims.

Having thus set forth and disclosed the nature of my invention, what is claimed is:

l. A ratchet handle pipe cutter comprising a pair of substantially semi-cylindrical segments hingedly con nected together along one of their longitudinal edges, ears integrally formed on the outside of each of said segments near the other of their longitudinal edges, corresponding ears on each of said segments being aligned with each other, said aligned ears being internally threaded, lock screws connecting said aligned ears within said internally threaded portions, a pipe cutting disc rotatably mounted on the inside of one of said semi-cylindrical segments near the central portion thereof, a pair of adjustable setscrews threaded through the other of said segments diametrically opposite from and on either side of said cutting disc, substantially triangular brackets fixedly carried at one corner thereof by the inner ends of said set-screws, said brackets being of channel-shaped cross section, a pair of rollers rotatably mounted in each of said brackets within the channel-shaped portions thereof adjacent the other corners thereof, a plurality of complimentary, arcuate pairs of spaced, substantially parallel segments hingedly connected to each other and adapted to encircle said semi-cylindrical segments when the latter are in a closed position, an elongated handle fixedly connected at one end to one spaced pair of said arcuate segments, ears integrally formed in and connecting the free ends of the endmost pairs of spaced, arcuate segments, said ears being adapted to align with each other when said spaced segments encircle said semi-cylindrical segments, said aligned openings being internally threaded, a lock screw within said aligned, internally threaded openings, ratchet eth integrally formed in said semi-cylindrical segments at. the central, outer peripheries thereof adapted to be receiv d. intermediate said spaced pairs of arcuate segments, and a plurality, of spring-urged ratchets mounted interediate. s id spaced, arcuate segments and in operative engagement with said teeth.

2. A ratchet handle pipe cutter according to claim 1, id pl rality of spring urged ratchets, mounted intermediate said; spaced, arcuate segments and in operative engagement with said teeth including a first ratchet aligned with the end of said handle, and a second ratchet rotated substantially ninety degrees from said first ratchet.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 784,445 Sylvester Mar. 7, 1905 1,031,261 Helm July 2, 1912 1,117,225 Nash Nov. 17, 1914 1,344,428 Nonneman June 22, 1920 1,393,156 Nonneman Oct 11, 1921

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