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The Shielded Double Crochet Hook: Two Sizes That Slide Out of One Tube
A bare crochet hook catches on everything in a bag, and two sizes mean two loose tools.
Warren H. Stansbery of Grand Haven, Michigan, received US 1,269,014, patented 11 June 1918, for a double-ended hook in a shield: a tube with a slot along one side holds a hook member with a hook at each end, preferably of different sizes; a sleeve with a pin through the slot pushes either hook out and locks it in the slot's right-angled end, and inward bends at mid-length hold the member when it is stowed.
This rung works out the slot length, then builds the shield from brass tube and two bought hooks, and tests how firmly it stows and locks.
Intermedio
About 3 hours
Instrucciones
1
1
Slot length
Slot length
Cargando el cuaderno de Jupyter…
2
2
Several sizes carried in one case before it
Several sizes carried in one case before it
The embedded blueprint keeps hooks of several sizes in a case. Stansbery puts two sizes on one member that slides out of its own shield.
3
3
Read US 1,269,014
Read US 1,269,014
"When the device is not in use the double ended hook member is entirely within the shield and the cylindrical section 4 thereof is frictionally engaged by said projections 10 whereby the hook member is held against any accidental movement with respect to the shield. By grasping sleeve 7 either end of the hook member may be projected beyond the shield as shown in Figs. 3 and 4, pin 8, or 8a or 8b moving through the slot 2 until it reaches one end thereof after which the combined sleeve pin and hook may be turned to seat the pin in the extension 3 of the slot, this holding the hook member in position with respect to the shield."
4
4
Cut the shield and slot
Cut the shield and slot
Cut 150 mm of 3/8" brass tube. Mark a line along it and cut a 2 mm slot on it with the rotary tool's cut-off disc from 15 mm to 135 mm, with a 5 mm turn at right angles at each end. Deburr with needle files.
Materiales para este paso:
Tubo de latón de 9,5 mm de diámetro exterior1 piezaHerramientas necesarias:
Sierra para metales
Tornillo de banco
Herramienta rotativa (tipo Dremel)
Juego de limas de aguja
Rotulador permanente
Regla
Gafas de seguridad transparentes5
5
Make the hook member
Make the hook member
Sand 40 mm of hardwood dowel until it slides freely in the tube. Drill each end on the axis for a hook's shank. Cut two hooks of different sizes from the set to leave 50 mm each, and epoxy one into each end.
Materiales para este paso:
Espigas de madera dura1 pieza
Epoxi de dos componentes1 piezaHerramientas necesarias:
Papel de lija
Calibre digital de 6 pulgadas
Taladro inalámbrico
Juego de brocasSierra para metales
Juego de ganchillos6
6
Fit the sleeve and pin
Fit the sleeve and pin
Cut 20 mm of 1/2" brass tube for the sleeve and drill a 1.5 mm hole through one side. Slide the member into the shield, the sleeve over it, and push a 1.5 mm steel pin through the sleeve and slot into a 1.5 mm hole drilled in the dowel's middle.
Materiales para este paso:
Tubo de latón de 1/2 pulgada de diámetro exterior1 pieza
Redondo de acero dulce1 piezaHerramientas necesarias:
Sierra para metalesTaladro inalámbricoJuego de brocas
Martillo7
7
Dent the stops
Dent the stops
With the member centred, tap a light dent inward with the centre punch on each side of the slot at mid-length, until the dowel is gripped but still slides.
Herramientas necesarias:
GraneteMartillo8
8
Or print it: one shield, a member per yarn weight
Or print it: one shield, a member per yarn weight
Instead of brass and bought hooks, print the parts in PLA at 0.12 mm layers, 100 % infill for the members:
- the shield, 150 mm long with its slot and right-angled turns
- the knurled sleeve
- a member for your yarn: 3.5/4.5 mm for fine yarn, 5/6 mm for medium, 6.5/8 mm for bulky
Every member has the same 10 mm core, so one shield takes them all. Print members standing upright, then join sleeve, slot and member with a 2 mm steel pin, as in step 6.
Materiales para este paso:
Filamento de PLA1 piezaHerramientas necesarias:
Impresora 3D de filamento (FDM)9
9
Print the shield
Print the shield
The shield, printed as step 8 describes.
10
10
Print the knurled sleeve
Print the knurled sleeve
The knurled sleeve, printed as step 8 describes.
11
11
Print the 3.5/4.5 mm member
Print the 3.5/4.5 mm member
The 3.5/4.5 mm member, printed as step 8 describes.
12
12
Print the 5/6 mm member
Print the 5/6 mm member
The 5/6 mm member, printed as step 8 describes.
13
13
Print the 6.5/8 mm member
Print the 6.5/8 mm member
The 6.5/8 mm member, printed as step 8 describes.
14
14
The patent drawing
The patent drawing
US 1,269,014 drawing sheet, public domain (expired patent).
15
15
Test it
Test it
Pull the sleeve with the force meter to unstow the member; note the force. Lock each hook out, shake it hard ten times, and check it has not moved. Crochet a 20-stitch chain with each hook and time it.
Materiales para este paso:
Hilo1 piezaHerramientas necesarias:
Dinamómetro (balanza de resorte)
Cronómetro16
16
A hook that rattles, will not lock or will not slide
A hook that rattles, will not lock or will not slide
Shielded double crochet hook troubleshooting.
Flow
Loading...
17
17
History and honest limits
History and honest limits
**Warren H. Stansbery** of Grand Haven, Michigan, filed US 1,269,014 on 27 February 1917; it was patented 11 June 1918. His sleeve has a knurled surface, convenient for grasping in crocheting; he showed a screw, a headed connector and a straight pin through the slot, and wrote that the straight pin "is the way that the device has been actually constructed."
**Honest limits.** He gives no sizes; ours are examples, and a dowel with two bought hooks stands in for his one-piece member. Your forces and times are the result.
Materiales
7- Marcador de posición
- 1 piezaMarcador de posición
- 1 piezaMarcador de posición
- Marcador de posición
- 1 piezaMarcador de posición
- 1 piezaMarcador de posición
- 1 piezaMarcador de posición
Herramientas requeridas
17- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- 1 vendor sell this, none ship to you yetMarcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
- Marcador de posición
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