US657058A - Mechanism for propelling boats. - Google Patents

Description

No. 657,058. Patented Aug. 28, I900. G. H. BLOMSTROM.

MECHANISM FOR PROPELLING BOATS.

(Application filed Mar. 28, 1900.)

(No Model.) 2 SheetsSheet I.

A Em

illlllllfllm MIMI/Wimp IIIl IIIIl//// we NDRrus PETERS co, PHOYD-LWHO snmurm. u c.

STATES CARL II. BLOMSTROM, OF MARQUETTE,MICHIGAN, ASSIGNOR TO TIIE LAKE SHORE ENGINE WORKS, OF SAME PLACE.

MECHANISM FOR PROPELLING BOATS.

SPEGIFICATION forming part of Letters Patent NO. 657,058, dated August 2 8, 1900. Application filed. March 28, 1900. Serial No. 10,449. (No model.)

To all whom, it may concern: with a fly-wheel d, and upon the crank-shaft, Be it known that I, CARL H. BLOMSTROM, a adjacent thisfly-wheel, is keyed the gearresident of the city and county of Marquette, wheel (1. The gear-wheel d meshes with pin- State of Michigan, have invented certain new ionsfand f, that are supported by journal- 55 5 and useful Improvements in Mechanism for pins projecting from the frame E, and these Propelling Boats, of which the following is a pinionsfand f" mesh, respectively, with the full, clear, and exact description. gear-wheels g and g, that are keyed to the This invention has for its object to provide inner ends of the propeller-shafts G and G at improved mechanism for propelling boats; opposite sides of the longitudinal center of 6o and with this object in view my improved the boat and at opposite sides of the engine. propelling mechanism comprises propeller- The propeller-shat" ts G and G have their forwheels located at opposite sides of the stern ward ends journaled in suitable bearings in of the boat, these Wheels being operated by the frame E, while their rear portions extend propeller-shafts that extend at each side of through outboard-bearings F, the expanded 65 the engine within the boat. inner ends of which are bolted, as at f to the The invention is shown as applied to an hull of the boat, and the propeller-shafts open boat, such as a life-boat, a surf-boat, or carry at their rear ends the propeller-wheels the like; but it will be understood, of course, G2 and G by which the movement of the that the invention is applicable to boats of boat will be controlled. 70 various kinds and sizes. The construction and mode of operation of The invention consistsin the novel features each of the propeller-wheels, and as well also of construction hereinafter described, illusthe construction of its bearing-sleeve, are trated in the accompanying drawings, and fully set forth in an application for Letters particularly pointed out in the claims at the Patent,fi1ed in the United States Patent Office 75 end of this specification. on the 27th day of January, A. D. 1900, Se- Figure 1 is a view, partly in side elevation rial No. 2,933, and need not be more particuand partly in vertical longitudinal section, of larly described here. It may be stated, howthe stern of a boat embodying my invention. ever, that the propeller-wheels belong to that Fig. 2 is a plan View of the parts shown in class of wheels having revoluble blades, the 80 0 Fig. 1. Fig. 3 is a view in vertical cross-secmovement of which blades varies the angles tion through the hull of the boat behind the at which they shall out the water in the revorear bulkhead. Fig. 3 is aviewin elevation lution of the wheel, this movement of the of the bed-plate or engine-frame. Fig. 4. is blades being controlled by the longitudinal a detail front view showing modified mechmovement of the propeller-shaft.

5 anism for driving the twin propeller-shafts. By reference to Figs. 1 and 2 of the draw- Fig. 5 is a plan view of the modified mechanings it will be seen that the gear-wheels g ism shown in Fig. 4. and g have their faces considerably broader A designates the hull of the boat, that may than the faces of the pinions f and f, the be of any usual or suitable construction, the purpose of this construction being to enable 0 o stern portion of the boat only being shown. these gears and pinions to remain in mesh Within the stern and at the rear of the bulknotwithstanding the longitudinal movements head B is mounted an explosive engine. As of the propeller-shafts necessary to vary the shown, this engine is a gasolene-engine havangle of the propeller-blades. Upon each of ing twin cylinders C, and beneath the cylinthe propeller-shafts G and G is fixed a 001- 95 ders of the engine extends the crank-shaft D. lar H, that is encircled by a band or ring h, The engine is mounted upon a bed plate or the trunnion-pins 72. of which are engaged by frame E, this frame being shown as formed the fork-shaped lower ends of the operatingwith legs or extensions e, e", and c that rest levers K, these levers being shown as pivoted upon the keel of the boat and upon the walls to brackets 70, projecting from the side walls too of the hull adjacent the keel. The outer end of the boat. The upper end of each of the 0f the crank-shaft D is shown as provided levers K is provided with a handle by which the lever can be manipulated in order to shift the corresponding propeller-shaft in forward or backward direction, and thereby vary the angle of the blades of the propellerwheel that is carried by said shaft.

From the foregoing description it will be seen that when revolution is imparted to the drive-shaft D of the explosive-engine corresponding revolution will be imparted from the drive-shaft, through the medium of the pinionsfandf and gear-wheels g and g, to the propeller-shafts G and G at opposite sides of the engine. If it be assumed that the operating-levers K are in the same position, then the propeller-wheels G and G will have their blades so set as to cut the water at a like angle, and the boat will be propelled in straightforward direction if the position of the operating-levers K be set for this action. If, however, it is desired to reverse the motion of the boat, then the operator by shifting the levers K can reverse the angle of the blades of the propeller-wheel, and thus effect the backward movement of the boat. If it be desired to turn the boat to the right or to the left, the operator can manipulate the operating-levers K so that the blades of the propeller-wheels G and G3 will cut the water at different angles, thereby causing the boat to turn to one side or the other or to turn completely around, if desired. I have found in practice that by locating the propeller-shafts on opposite sides of the engine, these shafts being geared to the forward end of the engine crank-shaft, a very compact and effective arrangement is secured and one particularly well adapted for small boats in which explosive-engines are employed, and by providing the propeller-shafts with pro-' peller-wheels the blades of which are variable to change the direction of travel of the boat the steering of the boat can be readily effected by means of the propeller-Wheels.

In Figs. 4 and 5 of the drawings I have illustrated modified means for transmitting motion from the crank-shaft to the propellershafts located at opposite sides thereof. In this form of the invention the crank-shaft has keyed thereto an eccentric M, that is encircled by a yoke m, connected with a triangular frame N. At opposite sides of the base of this triangular frame N are formed holes to receive the wrist-pins O, that project from the cranks P, attached to the forward ends of the propeller-shafts G and G. From the foregoing description it will be seen that as the crank-shaft D is revolved revolution will be imparted to the propeller-shafts G and G through the medium of the eccentric, the triangular frame, and the cranks at the forward ends of the propeller-shafts.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. The combination with a boat and with an engine therefor located in the stern and having a crankshaft, of two propeller-shafts parallel to said crank-shaft, located upon opposite sides of said engine, and extending through the stern of the boat, said propellershafts having propeller-wheels at their outer ends and having their inner ends operatively connected with the forward end of said engine crank-shaft.

2. The combination with an engine having a crank-shaft, of two propeller-shafts located on opposite sides of said engine, said propeller-shafts having their inner ends suit-ably connected to the crank-shaft and provided at their rear ends with propeller-wheels having revoluble blades and suitable means whereby the angles of the propeller-blades may be independently shifted to vary the direction of travel of the boat.

3. The combination with an engine having a crank-shaft provided with a gear-wheel, of two propeller-shafts located upon opposite sides of said engine, means whereby said propeller-shafts may be shifted in longitudinal direction, propeller-wheels at the outer ends of said propeller-shafts and provided with revoluble blades, and gear-Wheels at the inner ends of said propeller-shafts suitably connected with the gear-wheel of the crank-shaft.

CARL H. BLOMSTROM. Witnesses:

J. FRED KERN, FRED H. BEGOLE.

Images