US148809A

US148809A - Improvement in pumps

Info

Publication number: US148809A
Authority: US
Publication date: 1874-03-24
Anticipated expiration: 1891-03-24

Description

D. N. B. 60 FF! N, Jr.

umps.

Patented March 24. 1874.

DAVID N. B. OOFFIN, JR, OF NEVTOFT, ASSIGNOR TO HIMSELF AND BEN- JAMIN WOODVVARD, OF CAMBRIDGE, MASSACHUSETT S.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 148,809, dated March 24, 1874; application filed December 26, 1873.

To all whom it may concern:

Be it known that I, D. N. B. OOFFIN, Jr., f Newton, in the county of Middlesex and State of Massachusetts, have invented an Improved Pumping Apparatus, of which the following is a specification:

The object of my invention is to provide an improved means for operating ships pumps, especially where necessary to operate in a very limited space, so as to leave the decks more free and clear for the carrying of lumber and other deck loads, and as an auxiliary to the ordinary hand-lever and crank pumping-apparatus.

The apparatus is illustrated in the accompanying drawings.

Figure 1 is a perspective view of a ships main two-cylinder pump, to which my improvement is applied. Fig. 2 is a view of one of the foot-rests as bolted on the pumping-lever beam with clamps c c. Fig. 3 is a partial view of a foot-rest, provided with a wrist-pin for connecting-rod h. Fig. 4 shows the foot-rest cast on the lever-beam c, and is provided with a wrist-pin for the connecting-rods h. Fig. 5 shows lever-beam 0 provided with pin k, but no foot-rest. Fig. 6 shows the foot-rest connection provided with a center pivot. It also illustrates the attachment of the connectingrod beyond the foot-rest. Fig. 7 illustrates one form of connectingrod, and others are shown in Figs. 1 and 6. Fig. 8 shows the footrest provided with an arch to span the foot, which may be used with or without the flange a.

The foot-rests b are provided with a comparatively level seat for the foot, and a flange standing up on the outer edge, to prevent the foot from slipping off the outer end. They may also be provided with an arch or strap, Z, to pass over the foot, as see Fig. 8, with or without the flange. If preferred, the connectingrods may terminate at the bottom in a stirrup for the foot, and then be connected by a rod, 1', without other foot rests. This will keep the foot always level. The foot-rest above the lever-beam 6 also may be pivoted to the lever-beam, and kept level by the foot restin g upon it, or by a pendulous weight attached to it.'

The foot-rest a may be cast on the leverbeam, as shown in Fig. 4, or may be clamped on, as shown in Fig. 2, or otherwise bolted on, but in these cases will, of course, not preserve its level, but will oscillate with the lever-beam, which, being simple, will serve a good purpose.

These foot-rests b a are used directly on the lever-beam by a man standing on them and throwing his weight first on one foot and then on the other, meanwhile holding on to some stationary object to steady his body. A handle for this purpose is shown at f, and may be attached to some stationary part of the pump or the deck. One or more pairs of the auxiliary foot-rests 9 (shown in Fig. 1) may be used in connection with foot-rests b a, or independently. v

In Fig. 1 the auxiliary foot-rests are shown suspended, with their connection i, by the rods h, from suitable wrist-pins attached to the lever-beam, and are guided, to prevent their swinging, by suitable guides, as j. The con necting-bar i may be pivoted, if preferred, in the center, as shown in Fig. 6.

It will be observed that one man may work the pump or pumps by standing on foot-rests b, or on either pair of footrests g, and the pumps may be provided with either one pair above the lever, or one or more below, or all; and they may be used'auxiliary to or independently of the ordinary hand-levers, sockets for which appear in the lever-beam.

One of the advantages of the foot-rests b a is, that while it is elevated, so as to protect the operators feet in some degree from exposure to the water, its construction is such as to allow any water lodging upon it to flow off at the end. This construction, with open end and flange a, gives the best facility for clearing it from ice. For these purposes the sandals and foot-rests ordinarily used upon treadles are not well adapted, and are, therefore, unfit to be used on shipboard in icy weather, for which use this improved apparatus is specially adapted. These advantages are found in the foot-rests 9 also, which are similarly constructed.

I claim-- FFICE.

1. The foot-rest or sandal, constructed with detachable foot-rest I), the lever-beam e, and open end, and provided at the outer edge with foot-rest g, substantially as described. the flange a, the same being attached trans- 4. The combination of the foot-rest I), clamps versely to the pumping-beam e in pairs, with 0, bolt (1, and the lever-beam e, substantially the flanges at the farther sides, all substan as shown. tially as and for the purposes set forth.

2. The foot-rest g, rods h, and connection 6, D ID COFFD" in combination with the pumping lever or beam 'Witnesses: e, substantially as described. L. BURNETT,

3. The wrist-pin k, in combination with the M. H. BROWN.