US1356490A - Framing-machine - Google Patents

Description

1. B. DUNKIN.

FRAMING MACHINE. I APPLICATION FILED JAN- 7, 1919- v 1 356,49O. Patented Oct. 19, 1920;

2 SHEETSSHEET 1.

MIMIW/I," mm

avvuemto'c J. B. DUNKIN.

FRAMING MACHINE.

APPLICAHON FILED MN. 7, 1919.

1,356,490. Patqnted Oct. 19, 1920.

2 $HEETSSHEET 2.

UNITED STATES PATENT, OFFICE.

JOHN BYRON DUNKIN, or BELLINGHAM, WASHINGTON.

FRAMING-MACHINE.

To all whom it may concern:

Be it known that I, JOHN at Bellingham, in the county of Whatcom and State of Washington, have invented new and useful Improvements in Framing- Machines, of which the following is a specification.

This invention relates to woodworking machines, and aims to provide a portable machine of simple construction for cutting mortises in heavy timbers, being especially useful in the framing of ships.

Another object is to provide a device of this character which may be adjustable to cut mortises, such as square or inclined mortises, the adjustment permitting of use of the device in various positions.

A further object of the invention is to provide a machine of this character which is power operated, the operator or workman controlling the machine so as to cut the mortise at a proper depth or degree.

Other objects and advantages of the in vention will appear as the following description is read in connection with the accompanying drawings.

Figure 1 is a side elevation showing the machine in position for use.

Fig. 2 is a sectional view on the line 2-2 of Fig. 1.

Fig; 3 is an enlarged detail sectional view on the line 3-3 of Fig. 2. I

Fig. 4 is a plan view illustrating the machine in position for cutting a mortise different from that shown in Fig. 1, and

Fig. 5 is an elevation of Fig. 4.

Referring to the drawings in detail, like characters of reference denote corresponding parts throughout the several views.

In Fig. 1, the machine is shown as used for cutting a mortise, the bottom and one end wall of which is inclined. The ma-' chine comprises a cutting member 10, which is mounted upon one end of a rotary shaft 11, the latter being driven from a suitable source of power through a connection 12, which is coupled to the shaft as shown at 13 and may be connected to any suitable source of power.

The cutting member 10 includes a hub 14 which is secured upon the shaft 11, the said hub having cutting blades 16. The blades 16 are spirally arranged and are disposed longitudinally with respect to the hub 14, so that when the hub is revolved Specification of Letters Patent.

Briton Don- .KIN, a citizen of the United States, residing the blades will make a shearing cut in the I permit of its free adjustment or movement therein. The bearing 17 is also provided with a transversely disposed opening 19 through which passes a guide shaft 20 cylmdrical in cross section. The mounting Patented Oct. 19, 1920. Application filed January 7, 1919.' Serial i i of the bearing permits of free adjustment of the cutter longitudinally of the shaft 20 and also permits of free adjustment of the shaft 11 within the bearing 17, while the manner of mounting the bearing upon the shaft 20 enables the cutter to be tilted to any desired angle.

emovably mounted upon each end of the guide shaft 20 are standards 21, each comprising a bar 22 which is provided at one end with a curved extremity 23 having an opening 24 therein for the reception of,

the shaft 20. Mounted upon the standards 21 are guides 24, by means of which the said standards are secured upon the timber.

These guides are movable upon the standbe moved to regulate the distance of the shaft 20 fromards, so that the latter may the base of the timber, so as to regulate the inclination of the mortise.

In F igs. 4 and 5, the machine is shown applied to cut a square mortise. The structure of the machine is the same as that described "in connection .with the preceding figures, the difference being in the manner of applying the machine to the timber. As

shown in Figs. 4 and 5 the standards 22 are disposed longitudinally of the cut and upon the sides thereof and are held by means of guides24 on the timber to be out.

The blades 16 are provided upon their outer ends with transverse cutting edges 25, disposed at right angles to the longitudinal cutting edges, so that the member 10 will act to square up the mortise.

It is believed that from the foregoing description and the accompanying drawings, the construction, operation and advantages of the invention will be apparent. The invention is susceptible of'various changes in its form, proportions and minor details of construction and the right is herein 113-:

served to make such changes as properly fall within the scope of the claims.

appended Having described the invention, What is claimed is:

l. A mortising machine comprising a supporting frame including spaced parallel side members and a transverse bar, connecting said members, means for securing the frame in position, a bearing mounted'up on the transverse bar and capable of both pivotal movement and movement longitudinally 0f thebar, a shaft rotatably and longitudinally movable in said bearing and a cutting member carried by the shaft.

2. A mortising machine comprising a supporting frame including spaced parallel side members and a transverse bar connect ing said members, means for securing the frame in position, abearing member having a shaft receiving opening therein and an opening disposed transversely of the shaft receiving opening for slidably and pivotaliy "receiving the transverse bar, -a

shaft positioned in the shaft receiving opening and capable of rotary and longitudinal movement therein and a cutting member carried by the shaft.

In testimony whereof I affix my signature.

JOHN BYRON DUNKIN.

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