US1200099A - Hedge-trimmer. - Google Patents

Description

.F.M. GODDARD & T. H.VNEKT0N.

HEDGE TRIMMER. d APPLlcAUoN FILED JULY 16. 1915.

Patented oct.. 3,1916.

ZISHEETS-SHEET 2.

JAII/ENTORS,

AnaB/vir,"

FREDERICK M. GoDDARD ANDl Torvo H. NEKTON, or BROOKLYN, NRW YoRK.

HEDGE-TRIM'MER.

Specification of Letters Patent.

Patented oct. s, 1916.

Application led July 16,A 1915. Serial No. 40,154.

DAuD and -ToIvo H. NEK'roN, citizens of the- States, and residents of Brooklyn, in the county of Kings and State of New York, have'nvented certain new and useful Improvements in HedgeTrimmers, of whichthefollowing is a specification.

This invention relates to -hedge trimmers and its object is to provide a portable device operated by a motor and having a knob to be used as a handle to hold the machine against the hedge to be trimmed and at the same'tiine to be connected with the switch or valve controlling the motor to stop or start the ,same while the trimmer is .being heldV inits operative position.A These and other objects and detailsof the invention are more fully described i`n the following specification, set forth in the claims -and illustrated in the yaccompanying ,drawings wherein: v-

Figure 1, is a plan view of the improved hedge trimmer. Fig.`2 is a front view of the same. Fig. 3 is a. cross sectional view on the line 3-3 of Fig. 1. Fig. 4 is a similar view on the line 4 4. Fig. l5, is a longitudinal. sectional view through the line 5 5. Figs. 5 and 6, are modifiedforms of the trimmer. Fig. 7, illustrates a modified form of the device. l

The device is designed to be held up before the operator when working and is of convenient length to fit between his extended arms when the handle 10 at one end and the knob l1 atv the other end of the trimmer are each grasped by his hand. Thel handle 10 is located between the fork formed by the side supports 12 and the .latter are attached tothe end of the bar 13. The side supports 12 carry a` motor 14 near thelr outer ends and this motor may be of the,

- desired` size to do the cutting necessary, and

by means of a pinion 15 on the shaft 16v vdrives the gear wheel 17 carried by means of the bolt 18 from one of the supports. A wrist pin 19 on the inner face of the gear wheel 17 carries oneend of a p itrnan 20 whose other end is pivoted to a rod 21 eX- tending along the bar on its upper side and adapted to be reciprocated by the pitman.

The lower side of thebar 13 is chamfered and a steel bearing plate 22 set into the upper face thereof, while on the under surface of the bar is secured a stationary blade 23, In the space between the plate 2 2 and the blade 23 is placed a movable blade 24, the two blades having corresponding cutting teeth projecting beyond the edge of the bar 13. Ordinary wood screws may be employed to secure the plate 22 and the blade 23 to the bar and connecting blocks 25 interposed between the bar -21 and the moving blade and secured' to them by bolts, are adapted to play in slots 26 sol that means are thus provided for the movement of the latter blade. The blade 23 is also provided with angle pieces 27 at each end of the bar to prevent it from being injured and bent out of its proper shape.

The knob 11 is of non-'conductive material and mounted on a pivot 28 passing through the bar and having the nuts 29 to retain it in place, while on the lower` -side of the knob is a small disk.30 having contact pin 31 extending downward. The disk 30 is located in'a socket 32 and in the bottom of which is a flat contact spring 33 connected to one end of an electric circuit 34'including a source of energy, the motor 14. and the pin 31.

In operating this device the handle is grasped by one hand, preferably the left,

vand the knob 11 i's held in the other hand so that when it is desired to start work the knob is turned to close the circuit 34 by the contacts 31 and 32 and the motor operates the gear wheel 17, reciprocating the cutter blade 24. The trimmer may be moved over the top and sides of the hedge, cutting the outer branches to the desired depth and insuring uniformity on account of the length of the bar.

It isvobvious that a hedge trimmer con-` structed on this plan may be operated with other motive means than electricity as above described and where compressed air, gas or lsteam is used the knob 11 may be otherwise employed such as to control the` sparker of a gas engine or the valve of a fluid motor to open `and close the latter to operate the device while holding it in position to do its work. l

The modified construction shown in Fig. 6 employs a gas engine 35 mounted between the supports 12 and carries on its shaft 36 vthe crank disk 37 to operatethe connecting rod 38 and drive the cutting blade as described above. In this instance the knob 11 controls the sparker circuit 39.

In Fig. 7 a circular cutting blade 40 is used and located on the under side ofthe bar 13 being protected by a plate 41, while the electric motor 42 is carried on the upper side of the bar and connected with the blade and driven by the gearing 43.

1. In a hedge trimmer, the combination with a bar, adapted to be held between the outstretched hands of the operator, of rod extensions atoneend of the bar and connected by a handle, a stationary blade at one side of the bar, a moving blade adjacent. to the first blade, a motor for the latter' blade carried between the extensions, and a handle at the other endof the bar and adapted 'to control 4the motor.

2. In a hedge trimmer, the combination 'with a bar havin handles at each end, of a motor at one .o

the handles, controlling means for the motor at the other handle, a

blade on the frontA edge of the bar, and a l cutting blade moving adjacent to thesame and operated by the motor. 4 i

3. In a hedge trimmer, the combination with a bar having a depression at one edge and a slot, of a stationary blade in the depression, a moving blade adjacent to the stationary blade, a handle at-one end of the bar, a motor at the handle, a handleat the other end of the bar, a controller for the 'motor operated by the latter. connecting means between the controller and the motor, gearing on the motor, a pitman operated by the gearing, and studsfrom the moving blade. extending through theslot in the bar and connected with the pitman.

Signed at Brooklyn, in the county of Kings, and State of New York, this 29th day of May, A. D. 1915.'.v

FREDERICK M. GODDARD. TOlVO H. NEKTON. Witnessr v i l' WILLIAM J'. MCPHILLIAMY.

Images