US1150069A - Blowing-engine and the like. - Google Patents

Description

C. N; SCOTT. -B LOW|NG ENGINE AND THE LIKE.

APPLICATION FILED JUNE 25 I910.

Patented Aug. 17, 1915.

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APPLICATION FILED JUNE 25, I910.

1,150,069. Patented Aug. 17, 1915.

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LoWI Ne-nNGINE Annann IIIKE.

' Specification of Letters ratem. te t 1a, 1915 Applicationfiledlune 25, 1310. Serial No. 5%,782.

T0 (ZZZ whom it may] concern:

Be it'known that I, CLARENCE N. Sco'rtr, a subject of the King of England, residingat Buifal county of Erie, andState ofjNeW' York, have invented certain new and useful Improvements in. Blowing-Engines and the like, fully described and represented in the following specification and the accompanying drawings, forming a partof the same.v

This invention relates to an improved blowing engine or pump of thattype in which the piston moves on a hollow trunk extending through the. cylinder, theespe'cial object of the invention being to provide a blowingengine of this type which shall be more compact, and simpler and stronger in construction than those heretofore designed.

The invention is intended especially for large blowing engines, but may, be used in other similar air or gas pumpsor compressors in which large capacity isrequire'd.

hereafter and In accordance with my invention, thechollow trunk 18 used for admission, and thedisc'harge is at the ends of the cylinder, the admission of air from the trunk to the cylinder being controlled by mechanically operated-valves, and the discharge preferably by automatic or pressure operated valves. The use of the longitudinally moving cylinder or ring valves for controlling the admission ports and of an admission chamber outside the cylinder is thus avoided and important, results in compactness, simplicity of construction, strength and reduced weight of parts thus secured. V r

The invention includes, in addition to the above general features, certain detail combinations of parts, all as fully described particularly pointed out in the claims. 7 Y In the accompanying drawings forming a part of this specification, there is shown a blowing engine of the preferred formembodying the invention, in which drawings Figure 1 is a side elevation of the blowing cylinder and part of the driving mechanism.- Fig. 2 is a cross section on the line 2 of Figs. 1 and 3. Fig. 3 is a longitudinal central section of the blowing cylinder.

Referring to said drawings, A, B are the inboard and outboard heads of the engine,

C the cylinder body connecting the heads, D the piston, E the central trunk, F the air admission pipe connecting with the outer end of the trunk, and G the discharge pipes from the discharge chambers in heads A, B,

shownas combining outside the engine into th e-single blast pipe. It will be understood,

however, that any suitable delivery connecting'with the [discharge chamber's m'ay be The trunk E has the two seriesof annular admission portslO opening to the "cy1inder, and thesfe ports areic'ontr'olled by valves 11 carried by valve rod 12, these valves being hollow to permit the air topass through the n ft-orthe inboard endof thetrunk. The cylinder-is provided at its ends with dis charge openings'controlled, by automatic or pressure operated valves 13, which may be of any common or suitable form, and

through which the air is delivered from the cylinder to discharge chambers 14;. The dis charge openings and valves "are preferably in the-heads A,B, as shown but maybe in the cylinder wall at the ends of the cylinder."

The cylinder C ispreferably made in two longitudinal smiths-:15, 16,415 use-a1 in such large engines, but an important feature of the cylinder shown, by which convenient access to the plston and plston rlngs 1s secured without disturbing any parts of the engine except half the cylinder, consists in the division of the outboard end 16 of the cylinder into sections circumferentially of the cylinder, this end of the cylinder being shown as formed in halves secured together by flanges and bolts 1, and the engine is preferably supported independently of this end of the cylinder, so that free access to the piston and piston rings is afforded by simply unbolting these two halves of section 16 and removing them. i a I j The piston D and valves 11 may be operated by any suitable means. As shown, the piston D is driven by rods 17 at opposite sides of the piston passing through the inboard head and connected to cross head l8 on the main piston rod of the motor engine. The valve rod 12 carries cross head 19 connected by lever 20 and link 21 to crank 22 on the main crank pin driven by crank rod 28 from the cross head 18.

It will be seen that the construction is very compact as compared with previous blowing engines, this compactness of structure reducing largely the size and weight of parts. Great strength is (secured, also, as

the heads are connected and tied together by the stationary cylinder of approximately the full diameter of the heads. The trunk need not be relied upon for tying theheads together, as this result is efliciently secured by the stationary cylinder, so that'the trunk may be lighter than when relied on to connect the heads. The large trunk required for free admission of a large quantity of air reduces the depth of the piston and affords a large bearing surface forit so that a simpler form of piston may be'used on account of its large bearing surface and reduced weight The mechanism for reciprocating :the admission valves is simpler, lighter andmore compact. than with the movable cylinder or ring valves.

o It will be understood that the invention is not limited to the exact form or arrange ment of the parts shown, but that modifications may be made therein without departing from theinvention as defined by'the claims. 1

WhatI claim is: Y v I 1. A blowing engine or pump having a stationary cylinder and a stationary hollow trunk extending through the piston and having cylinder inlet ports through the trunk, mechanically actuated inlet valves controlling said inlet ports, and discharge ports and valves at the ends of the cylinder.

=2. A. blowing engine or pump having a 1 stationary cylinder and a stationary hollow trunk extending through the piston and Copies of this-patent may be obtained for erated discharge valves at the ends of the cylinder. t a

at. Ina blowing engine or pump, the com bination with cylinder heads forming discharge chambers, a stationary cylinder con-- necting said heads, and the piston, of a hol- 1 low trunk'extending through the cylinder and piston and open for admission at one end havin 0 linder inlet JOItS throu h the trunk, mechanically actuated inlet valves moving in the trunk and permitting the passage of air through them from the inlet end of the trunk, and discharge ports and valves at the 'ends' of the cylinder.

In'testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses.

' CLARENCE N. sooT'r.

Witnesses R. WINTZER, I T. T. BRYEN.

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

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