CH249187A - Hacksaw. - Google Patents
Hacksaw.Info
- Publication number
- CH249187A CH249187A CH249187DA CH249187A CH 249187 A CH249187 A CH 249187A CH 249187D A CH249187D A CH 249187DA CH 249187 A CH249187 A CH 249187A
- Authority
- CH
- Switzerland
- Prior art keywords
- saw blade
- hacksaw
- dependent
- fan ring
- projections
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
- B23D51/12—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for use with tools, dealt with in this subclass, which are connected to a carrier at both ends, e.g. bows adjustable in length or height
- B23D51/125—Blade tensioning means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Bügelsäge. Gegenstand vorliegender Erfindung ist eine Bügelsäge mit Spannhebel für das Sägeblatt, welche gekennzeichnet ist durch zwischen dem Bügel und dem Sägeblatt ein geschaltete Mittel, welche bei angezogenem Spannhebel das Sägeblatt gegen Drehen sichern.
Beiliegende Zeichnung zeigt eine bei spielsweise Ausführungsform des Erfin dungsgegenstandes.
Fig. 1 ist eine Ansicht der Säge.
Fig. 2 zeigt in grösserem Massstabe das eine Ende des Bügels und des Sägeblattes. Fig. 3 ist eine Ansicht eines Fächer ringes.
Am einen Ende des zweckmässig aus Stahl rohr bestehenden Bügels 1 mit z. B. ovalem Querschnitt ist ein Spannhebel 2 zum Span nen des Sägeblattes angelenkt. Das Säge blatt 3 ist mit diesem Hebel über eine Vorrichtung 4 zur Regulierung der Säge blattspannung und über ein Verbindungs stück 5 verbunden. Zwischen den Kopf 6 der Vorrichtung 4 und das Zwischenstück 5 ist ein Fächerring 7 eingesetzt. Ein sol cher Fächerring 7 befindet sich auch zwi schen dem Auge 8 des Bügels 1 und dem Kopf 9 eines Verbindungsstückes- 10 zwi schen Bügel 1 und Sägeblatt 3. Diese Fächerringe haben einen innern Rand 11 und aus diesem auf beiden Stirnseiten her vortretende Vorsprünge 12, welche mit den gegen Drehung zu sichernden Teilen der Säge zusammenarbeiten.
Diese Vorsprünge sind gegenüber dem innern Ringrand 11 ge neigt. Sie bilden also eingespannte, auf Verdrehung beanspruchte Stäbe. Sie können mit dem Ringrand 11 aus einem Stück her gestellt sein.
Bei gemäss Fig. 1 angezogenem Spann hebel 2 presst der Kopf 9 den an ihm an liegenden Fächerring 7 gegen das Auge 8 und das Zwischenstück 5 den andern Fächerring 7 gegen den Kopf 6. Die Vorsprünge 12 an beiden Stirnseiten der Fächerringe 7 werden dabei auf Verdrehung beansprucht und ver hindern die Teile 9 und 8 bezw. 6 und 5 an einer gegenseitigen Drehung. Entspannt man den Spannhebel 2 durch Drehen, in Fig. 1 gesehen, im Uhrzeigersinn, so wird auch die sichernde Wirkung der Fächer ringe aufgehoben. Dem Sägeblatt kann nun eine andere Neigung gegeben werden, in welcher es nach erneute=m Anzug des Spann hebels durch die Fächerringe wiederum gegen Drehen gesichert ist.
Dadurch, dass die Fächerringe auf beiden Stirnflächen mehrere Vorsprünge 12 auf weisen, vervielfacht sich ihre sichernde Wir kung gegenüber einer gewöhnlichen federn den LTnterlagscheibe. Da. ausserdem die Länge der Vorsprünge sehr klein ist, ist diese Wir kung noch kräftiger.
Hacksaw. The subject matter of the present invention is a hacksaw with a tensioning lever for the saw blade, which is characterized by a means connected between the bracket and the saw blade which, when the tensioning lever is tightened, secure the saw blade against turning.
The accompanying drawing shows an embodiment of the invention with example embodiment.
Fig. 1 is a view of the saw.
Fig. 2 shows on a larger scale one end of the bracket and the saw blade. Fig. 3 is a view of a fan ring.
At one end of the suitably made of steel tube bracket 1 with z. B. oval cross-section is a clamping lever 2 hinged for clamping NEN of the saw blade. The saw blade 3 is connected to this lever via a device 4 for regulating the saw blade tension and a connecting piece 5. A fan ring 7 is inserted between the head 6 of the device 4 and the intermediate piece 5. Such a fan ring 7 is also located between the eye 8 of the bracket 1 and the head 9 of a connecting piece 10 between bracket 1 and saw blade 3. These fan rings have an inner edge 11 and projections 12 protruding from this on both end faces, which work together with the parts of the saw that are to be secured against rotation.
These projections are relative to the inner ring edge 11 tends ge. So they form clamped rods that are subject to torsion stress. You can be made with the ring edge 11 in one piece.
1 tightened clamping lever 2 the head 9 presses the fan ring 7 lying on it against the eye 8 and the intermediate piece 5 the other fan ring 7 against the head 6. The projections 12 on both faces of the fan rings 7 are twisted claimed and prevent the parts 9 and 8 respectively. 6 and 5 on mutual rotation. If you relax the clamping lever 2 by turning, seen in Fig. 1, clockwise, the locking effect of the fan rings is canceled. The saw blade can now be given a different inclination, in which it is again secured against turning by the fan rings after tightening the clamping lever again.
The fact that the fan rings have several projections 12 on both end faces, their securing effect is multiplied compared to an ordinary spring the L washer. There. In addition, the length of the projections is very small, this effect is even stronger.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH249187T | 1946-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH249187A true CH249187A (en) | 1947-06-15 |
Family
ID=4467376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH249187D CH249187A (en) | 1946-05-18 | 1946-05-18 | Hacksaw. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH249187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2808086A (en) * | 1955-07-08 | 1957-10-01 | Dreier Brothers Inc | Hand-saw construction |
-
1946
- 1946-05-18 CH CH249187D patent/CH249187A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2808086A (en) * | 1955-07-08 | 1957-10-01 | Dreier Brothers Inc | Hand-saw construction |
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