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Publication numberUS887494 A
Publication typeGrant
Publication dateMay 12, 1908
Filing dateAug 22, 1907
Priority dateAug 22, 1907
Publication numberUS 887494 A, US 887494A, US-A-887494, US887494 A, US887494A
InventorsGeorge N Mulertz
Original AssigneeGeorge N Mulertz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pruning-shears.
US 887494 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

No. 887,494. PATENTBD MAY 12, 190s. GIN. MULBRTZ.

PRUNING SHEARS.

APPLIOATION FILED AUG. 22, 1907.

2 SHEETS-SHEET 1.

WITNESSES: [NVENTOR Htfomy 3 we: NORRIS PETERS ca, was mucrou. o. c.

No. 887,494. PATENTED MAY 12, 1908.

G. N. MULERTZ.

PRUNING SHEARS.

APPLICATION FILED AUG. 22, 1907.

2 SHEETS-SHEET 2.

WITNESSES -CSLW m- 1.37

[NI EN TOR GEORGE N. MULERTZ, OF NORFOLK, NEBRASKA.

PRUNING-SHEARS.

Specification of Letters Patent.

Patented May 12, 1908.

Application filed August 22, 1907. Serial No. 389,690.

To all whom it may concern:

Be it known that I, GEORGE N. MULERTZ, a citizen of the United States, residing at Norfolk, in the county of Madison, State of Nebraska, have invented certain new and, useful Improvements in Pruning-Shears and I do hereby declare the following to be full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention has reference to improvements in pruning shears, and it aims to provide an implement of that class carrying a gripping attachment operating in connection with the cutting jaws thereof, for engaging the severed twigs or branches and permitting the operator to remove them from a tree or shrub.

To this end the invention resides in the attachment to the cutting jaws of a pair of serrated gripping jaws, one of which is forced yieldingly towards the other under the action of a spring carried by the corresponding cutting jaw.

The invention further consists in the par ticular construction, combination, and arrangement of parts, all as hereinafter fully described, specifically claimed, and illustrated in the accompanying drawings, in which like parts are designated by corresponding reference numerals throughout the several views.

Of the said drawings, Figure 1 is a front elevation of a pair of pruning shears equipped with the improved gripping attachment, Fig. 2 is a side elevation thereof, illustrating the position of the spring for actuating the movable gri ping plate. Fig. 3 is a rear elevation. ig. 4 is a transverse section through the jaws and plates.

Referring more particularly to the drawings, the shears shown therein are, in the main, of the ordinary type and include the crossed levers 7 and 8 pivoted upon the fulcrum pin 9, the handle portions of the levers being normally separated by the springs 10. The operating ends of the levers are provided with the aws 11 and 12, the former of which has riveted to one face thereof the usual cutting blade 13. Disposed against the opposite face of the jaw 11 is a plate 14 provided with a serrated inner edge 15, the shape of said plate being similar to that of the blade 13. This plate is pivoted at its lower end to the pin 9 and is provided centrally with a transversely-disposed arcuate slot 16 through which a headed bolt 17 carried by said jaw extends. The opposite jaw 12 has formed on its outer edge a laterally-projecting extension 18, whose free longitudinal edge is bent inwardly towards the plate 14, and lies in spaced relation to and parallel with the adjacent face of the said jaw. The bent edge of the extension 18 is also serrated, as indicated by the numeral 19.

The plate 14 is normally forced towards the serrated portion of the extension 18 by means of a leaf spring 20 secured at its lower end to a pin 21 set into the jaw 11 and bearing at its opposite end against the outer edge of the plate 14, the bearing end of the spring being laterally bent, as shown.

Owing to the provision of the spring it will be apparent that in gripping a severed twig or branch, the plate will yield slightly or move away from the serrated edge of the extension 18 against the action of the spring, thus adjusting itself to all sized branches, and gripping them firmly.

l/Vhile, in the present instance, a leafspring has been shown, it is not intended that the invention be limited to this construction, as an expansible coil-spring connected to the plate and the adjacent handle might obviously be substituted. It will be apparent also that the extension 18 instead of being formed on the jaw 12, may be in the nature of an L-shaped plate which is secured to the outer edge of said jaw.

The plate 14 and extension 18 each form what may be regarded as a jaw, and the term gripping jaws occurring in the claims has reference therefore to these elements.

What is claimed, is,

1. The combination, with a pair of pruning shears, one of the shear jaws having a laterally-projecting extension formed thereon, said extension having its free longitudinal edge bent inwardly, of a plate carried by the other shear jaw, said plate being movable towards and from said extension.

2. The combination, with a air of pruning shears, one of the shear jaws fiaving a laterally-projecting extension formed thereon, said extension having its free longitudinal edge bent inwardly, of a plate carried by the other shear jaw, and provided with a transversely-disposed slot through which a bolt carried by the corresponding shear jaw extends, said plate being movable towards and from said extension.

3. The combination, withapair of pruning edge of said plate, and means for normally shears, of a transversely slotted plate carried 1 forcing said plate towards said extension. 10 by one of the shear jaws and provided with a In testimony whereof, I affix my signature. serrated inner edge, a bolt carried by said in presence of two witnesses.

5 Shear jaw and extending through said slot, GEORGE N. MULERTZ.

a laterally-projecting extension formed upon Nitnesses: the other shear jaw and having its serrated GEO. H. FULLER,

inner edge bent inwardly towards the serrated JACOB KRAFT.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3336667 *Nov 19, 1964Aug 22, 1967Wallace MfgPruning cutter
US3688405 *Apr 21, 1971Sep 5, 1972Dutra Joseph G JrPruning shears
US4660285 *Mar 10, 1986Apr 28, 1987Kurt Schmidt Fabrikation Von Stahlwaren Und Chirurgischen Instrumenten (Gmbh. & Co.)Thinning scissors
US5189794 *Dec 16, 1991Mar 2, 1993Young-Life International Co., Ltd.Pair of shears with tongs
US5254129 *Nov 22, 1991Oct 19, 1993Alexander Chris BArthroscopic resector
US5636443 *Jun 7, 1995Jun 10, 1997Fiskars Oy AbSnips
US6457238 *May 10, 2000Oct 1, 2002Michael MaierEating utensil
US6457241 *Feb 16, 2001Oct 1, 2002Michel DroinErgonomic scissors
US6725544 *Apr 14, 2003Apr 27, 2004Jiin Haur Industrial Co., Ltd.Anvil structure for garden clippers
US7073261Jul 6, 2004Jul 11, 2006Collins Jason HCut and grab shearing head
US7353736Jul 27, 2005Apr 8, 2008Leatherman Tool Group, Inc.Enhanced multi-function hand tool
US7596870Mar 2, 2004Oct 6, 2009Leatherman Tool Group, Inc.Folding multipurpose tool with shears and comfortable handles
US7607231Aug 8, 2005Oct 27, 2009Leatherman Tool Group, Inc.Folding multipurpose tool with shears and comfortable handles
US7921752Mar 21, 2008Apr 12, 2011Leatherman Tool Group, Inc.Enhanced multi-function hand tool
US9107351 *Jul 26, 2011Aug 18, 2015Robert SeloffLopper devices for pruning trees and brushes
US20050193498 *Mar 2, 2004Sep 8, 2005Glenn KleckerFolding multipurpose tool with shears and comfortable handles
US20120030951 *Feb 9, 2012Robert SeloffLopper devices for pruning trees and brushes
WO1998009780A1 *Sep 9, 1997Mar 12, 1998Easycut LtdAn adjustable pruning device
Classifications
Cooperative ClassificationA01G3/02