Ubufatanye
UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Reversible-Tip Soft-Face Hammer: Domed Rubber Tips Locked in Screw-On Sockets by an Internal Rib (West & Robinson, 1962)
Robert F. West and Walter H. Robinson of Connecticut received US 3,040,792, dated 26 June 1962, for The Stanley Works. A tubular socket screws onto a threaded boss at each end of the hammer's head. A rubber tip, domed at both ends, is pushed into the socket past an internal rib, which bites into it, and its rubber fills short grooves so it cannot turn. The tip can be pulled out and turned round to use its other end. On its first blows the tip's inner face squeezes into an off-centre hole in the boss and forms its own dowel, which stops the socket unscrewing.
The patent gives no sizes; every size here is ours.
Hejuru
About 2 days
Amabwiriza
1
1
The tip's proportions
The tip's proportions
Gupakira ikaye ya Jupyter…
2
2
Read US 3,040,792
Read US 3,040,792
"Upon being subjected to the percussive forces during initial use, some of the plastic material of the inner face 27 of the striking tip 26 will be extruded or forced into the eccentrically located recess 12 in the boss surface 10 to provide a self-forming dowel pin 28 which effectively prevents inadvertent loosening of the threaded connection between boss and mounting socket during use."
3
3
Turn the head 2
Turn the head 2
From 35 mm steel bar turn a body 4 80 mm long with a boss 8 20 mm across and 15 mm long at each end; cut M20 threads on the bosses with the die. In each boss's end face drill a recess 12 4 mm across and 4 mm deep, 6 mm off centre. Drill a 20 mm handle eye 6 through the middle in a V-block.
Ibikoresho by'iyi ntambwe:
Umurongo uziguye w'icyuma cyoroheje1 igice
Amavuta yo gukata1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyuma
Igikoresho gifata cy'ibirenge 3 cy'imashini ihingura
Icyuma cyo kuca cy'itorero
Icyuma cyo guca ku ruziga
Agakoresho ko gukata imizingo y'ibyuma
Igifashi cyo guhindukiza umuyoboro wo hanze
Ifatiro ry'Ameza
Icyuma Cyivumbura Gihagaze
Ikibumbe cya V
Ibyuma Byinshi byo Gucukura
Igicukuzi cyo Gushyira Ikimenyetso
Ikigereranyo cya Digitale cy'Amasentimetero 6
Amadarubindi y'umutekano4
4
Turn the sockets 14
Turn the sockets 14
From 48 mm bar turn two sockets 30 mm long. Knurl the outside 25. Drill and tap the collar end 18 M20, 8 mm deep. From the other end, before boring, drill four 4 mm holes 20 mm deep centred on a 38 mm circle, for the grooves 24. Bore the aperture 16 38 mm across and 20 mm deep, leaving a rib 22 4 mm wide 10 mm in, turned to 35 mm with 30 degree ramps either side.
Ibikoresho by'iyi ntambwe:
Umurongo uziguye w'icyuma cyoroheje2 ibiceAmavuta yo gukata1 igiceIbikoresho bikenewe:
Imashini yo guhinguza icyumaIgikoresho gifata cy'ibirenge 3 cy'imashini ihinguraIcyuma cyo kuca cy'itorero
Igiti cyo gukata imbere mu mwoboIcyuma cyo guca ku ruziga
Igikoresho cyo gushushanya imirongo ku byumaIcyuma Cyivumbura GihagazeIbyuma Byinshi byo GucukuraAgakoresho ko gukata imizingo y'ibyuma
Igifashi cyo guhindukiza umuyoboro wo hasiIkigereranyo cya Digitale cy'Amasentimetero 65
5
Make the tips 26
Make the tips 26
For each tip, cut nine discs of 4 mm natural rubber sheet 40 mm across and bond them into a stack with contact cement; clamp it overnight. Grind it round to 38.5 mm on the belt sander, then dome both ends: a large curve over most of the face and a small round where it meets the side, the same at both ends, 36 mm long overall.
Ibikoresho by'iyi ntambwe:
Urupapuro rwa kawushu karemano1 igice
Ifatanya rikorana1 igiceIbikoresho bikenewe:
Ikirangamurongo
Icyuma cy'Ubukorikori
Igifashe cy'inkoni
Imashini isya ifite umukandaraIkigereranyo cya Digitale cy'Amasentimetero 66
6
Assemble
Assemble
Turn an ash handle to drive into the eye and wedge it. Screw a socket onto each boss hand-tight. Push a tip into each socket, squeezing it past the rib in the vice between soft packing, until its inner dome bears on the boss. Give the first few blows on a wood block: the rubber pushes into the boss's recess and locks the socket. To turn a tip round, pull it out, reverse it and push it back.
Ibikoresho by'iyi ntambwe:
Ikibaho cy'Igiti Gikomeye1 igice
Ikinyabutabire cy'Ibiti1 igiceIbikoresho bikenewe:
Imashini ikerekeza ibiti
Icyegeranyo cy'ibikoresho by'imashini izunguruka (HSS)
Umucumita w'Ibyuma
Inyundo ifite umutwe wa burutaIfatiro ry'Ameza7
7
Troubleshooting
Troubleshooting
Reversible-tip hammer troubleshooting.
Flow
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8
8
History and honest limits
History and honest limits
**Robert F. West** of Simsbury and **Walter H. Robinson** of West Hartford, Connecticut, assignors to The Stanley Works, US 3,040,792, dated 26 June 1962, filed 31 August 1960. They claimed sockets with an internal portion of reduced cross-section whose surfaces are "inclined to provide ramp surfaces", and symmetrical tips "having end surfaces of convexly curvilinear configuration", removable and "reversible in said sleeves". They list natural rubber, synthetic rubbers, nylon and cellulose esters for the tips; ours are laminated natural rubber. They give proportions but no sizes; every size here is ours.
Ibikoresho
6- Umwanya
- 2 ibiceUmwanya
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- 1 igiceUmwanya
- 1 igiceUmwanya
- 1 igiceUmwanya
Ibikoresho bikenewe
24- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
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- Umwanya
- Umwanya
- 1 vendor sell this, none ship to you yetUmwanya
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- Umwanya
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