US1375013A - Cutter-guard - Google Patents

Description

M. L. PINETTE.

CUTTER GUARD.

APPLICATION Fl-LED MAY-22,1920.

' Patented Apr.'19,1921.

lnvento 'z omrsn STATES PATENT OFFICE.

MARCEL I1. PINE-CUTE, OF WESTBROOK, MAINE.

CUTTER-GUARD.

Application filed May 22, 1920. I Serial No. 383,370.

Hitherto, these devices have been so connected with the frame of the machine that they were either stationary on the machine or they were removable with considerable difiiculty.

There are times in the use of the machine when the work being operated upon requires that the bed of the machine shall be entirely unobstructed and that the protecting device shall be completely removed to a point below the level of the bed.

The object of my invention is to construct a cutter guard which is held firmly 1n ts normal position covering the cutter knife but which may be quickly and easily swung down to the side of the machine entirely out of the way of the work and as easily replaced.

I accomplish this object by securlng a bracket to the side of the machine with a riser which supports the guard plate holding it in position and is so connected with the bracket by a hinge connection that while normally having a rigid connection it may be quickly shifted to its hinge connection by sliding it slightly agalnst the action of a tension spring or by some such simple and quickly operable means.

I have illustrated my invention by means of the accompanying drawing in which Figure 1 shows a side elevation of a portion of the buzz planer with the cutter cylinder in section.

Fig. 2 is a plan of the same.

Fig. 3 is an enlarged rear elevation of the operative parts of the device showing the bed of the machine in section and,

Fig. & is an enlarged view in elevation showing the connection between the riser and the bracket.

Referring to the drawing:

1 represents the bed of the machine, 2 is Specification of Letters Patent. Patented Apr. 19, 1921.

the upright guide, against which the work is pressed, and 3 is the planer head.

The cutter guard is supported byv a bracket 4 which is connected with the frame 1. This connection may be made in any well known manner but'as here shown there is formed on the bracket an upright stud 5 fitting in an opening formed in the bed and extending vertically through the same.

The stud 5 extends up in this opening and is secured in place'by a set screw 6.

The lower end of the bracket which pro-- jects outward beyond the edge of the table has two ears 7 and 8 through which pass the hinge spindle 9 by which the riser 10 is hinged to the bracket.

The inner surface of the ear 7 is formed with a recess 12 and on the outer surface of- 'the corresponding portion of the riser isformed a projection 11 which fits normally into the recess 12 and thus holds the riser rigidly in place. 7

The distance between the ears 7 and 8 is somewhat greater than the lower end of the riser so that the riser is capable of sliding longitudinally on the pin 9 a limited dis tance. The riser and the ear 11 are kept normally interlocked by a spring 13 which surrounds the pin 9 and fits within a recess formed in the lower end of the riser.

Thus, when the spring is in operation it tends to hold the riser and the bracket rigidly together but when lateral pressure is put on the riser it .can be made to slide along the pin 9 so as to unlock the riser from the ear 7 and the riser to be turned or swung down entirely out of the way.

As here shown, the riser 10 consists of a relatively broad flat member extending upward to the level of the top of the bed or table. It is there connected by a hinge joint with a horizontal plate 14 which rests on the bed or table.

The plate 14: supports one end of the guard plate pivoted to move in a horizontal direction so that the guard plate may be adjusted toward and away from the guide, 2.

The connection with the guard plate which is a thin plate is arranged through the guard holder 16 which is pivoted to the inner end of the guard 14 being retained in place by a thumb nut 17.

Thus, by loosening up the thumb nut 17 the guard plate 15 may be made to swing far enough away from the guide 2 so as to leave just room enough for the work to be joined to slide between the edge of the guard plate 15 and the guide 2. 7

Thus, the planer knife is entirely covered and all dangerous work is avoided.

When it is desired to make use of the entire top of the table as when wide articles are jointed it is only necessary to lightly push the riser 10 toward the right as here shown and all the parts may be turned down around the pivot pin 9, the parts hanging down at the side of the machine in the position as shown by dotted lines in Fig. 3.

The guard plates and its attached partsmay be quickly swung up into position when needed, the interlockiing joint between the riser and the bracket automatically coming into engagement by the pressure spring 13. This device meets the requirements of wood working mills where in order to be used by the men the manipulation in removing and replacing the device must be exceed. ingly simple and quick of adjustment; otherwise, the operatorswill neglect to use them and take their chances ot accident.

The ease and quickness of manipulation to get the guard removed and out of the way makes this a device which the workman will readily use and which will thus be effective in preventing accidents.

support and exten'din I claim: r

1. In a cutter guard for buzz planers'and the like, the combination of a bracket secured to the frame of the machine, a riser hinged to said bracket, a guard plate support secured to the upper end of said riser extending over and resting on the table of the machine, a guard plate secured to said over .the cutter and means for holding said riser in'locked position with said bracket when in operative position and in released or hinged position when the device is not in operation.

2. In a cutter guard for buzz planers and the like, the combination of a bracket secured to the frame of the machine, a riser, a hinge pinv for hinging said riser to said bracket, a spring for pressing the riser longitudinally on Vsai'dpin, the contacting portions of the riser and bracket being formed'to interlock when pressed together by said spring and a guard plate support secured to the upper-end of said riser eX- tending over and resting on the table of the machine and a guard plate secured to said support. V

In testimony whereof I have afiixed my signature. 7

MAROEL L. PINETTE.

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